Windows 10 100% disk usage in Task Manager [SOLVED]

Sometimes your computer could run very slow even though you have only very few programs running. When you check the Task Manager trying to find out which application or program is at fault, you see the status bar of your disk usage could be up to 100%.

Luckily, this is not a hard problem to solve. Follow the options provided here and see if the problem goes away. 

Option One: Disable Windows Search
Option Two: Disable Superfetch Service 
Option Three: Reset Virtual Memory

Option Four: Disable Antivirus Software and Windows Defender
Option Five: Change the settings in Google & Skype
Other Option

: It is suggested that you open the Task Manager window to see if the option can actually help you decrease the disk usage from 100% to less. To enter Task Manager, right click the task bar and choose Task Manager

Note that it may take some time since the drive is rather slow. 

Look for the Disk column in Process tab. The colored red tab and the number 100% indicate that you are having a problem with your drive. 

It is always suggested that you keep you device drivers updated so as to eliminate the possibility of such problems. Get your professional driver updater Driver Easy here for FREE

Option One: Disable Windows Search

1) Type cmd.exe in the search box. From the list of choice, right click Command Prompt and choose Run as administrator

Click Yes at the UAC window prompt. 

2) In the Command Prompt window, type in the following command: 

net.exe stop "Windows search"
Then hit Enter

If you would like to stop Windows search permanently, please do the following:

a) Press Windows key + R at the same time, and type in services.msc

b) Locate Windows Search option, double click it to enter its Properties window. 

c) Change the Startup type to Disabled. Then click OK to save the change. 

Check to see if the disk usage and the performance of your computer improve or not, if not, please move on. 

Option Two: Disable Superfetch Service

Superfetch service has been identified as a potential cause of disk performance issues in Windows 8 and later operating system. To stop this service, you can follow the instructions below. 

1) Type cmd.exe in the search box. From the list of choice, right click Command Prompt and choose Run as administrator

Click Yes at the UAC window prompt. 

2) Type in the following command: 

net.exe stop superfetch

and then hit Enter

Wait for a few minutes to see if changes can be seen on your computer’s performance. 

If you want, you can also run a disk check by typing the following command: 
chkdsk.exe /f /r
and hit Enter. Then type Y to confirm the disk check by the time you restart your computer. Please make sure you have closed all of your applications first. 

NOTE: Disk check will start the next time you boot your PC and it might take some time (could be a day for some) for the check to finish without any interference. Restarting your PC when the scan seems stuck is only stopping it from doing its job. If you cannot wait, just skip the disk check.  

If disabling these two services still don’t help, please try the methods that follow. 

Option Three: Reset Virtual Memory

Virtual memory can be considered as the extension of computer’s physical memory. It is a combination of RAM and a portion of your hard drive. When the RAM is not enough, Windows will make use of the virtual memory for temporary file storage and swap them back when required. 

1) Follow the path Start > File Explorer. Right click This PC and choose Properties.

2) Click Advanced System Settings on the left panel. 

 3) Click the settings button under Advanced tab. 

4) Go to Advanced tab, and choose Change in Virtual memory category. 

5) Make sure the box before Automatically manage paging file size for all drives is off. 

6) Select your windows drive, that is where you store your Windows operating system(usually partition C), set the number accordingly. Then press Set and then OK to continue. 

Note: As a general rule, we don’t want the size of the paging file become too big, thus with the limited maximum size. The general maximum size of the paging file must be x1.5 the amount of RAM installed. For a PC running with 4 GB of RAM, the maximum size of the swap file will be 1024 x 4 x 1.5 Mb.

7) Please also remember to clear all files by doing the following procedure. Press Windows key and R at the same time, type in temp and hit Enter

8) Select all the files and delete them.

Option Four: Disable Antivirus Software and Windows Defender

1) If you have installed antivirus or anti-malware programs such as Norton, Kaspersky, AVG, or Malwarebytes, it is suggested that you turn them off or disable them temporary to see if the disk usage could be back to normal. If the antivirus or anti-malware software is at fault, it is suggested that you consult the manufacturers of the software to see if they can provide some help. 

Related post: 
How to temporarily turn off Norton Antivirus program?
How to stop AVG temporarily?
How to disable Avast temporarily? 

2) Microsoft has its own default anti-malware, Windows Defender. This program is automatically enabled even when you have an alternative antivirus application. In Windows 10, the Cloud-based protection is on automatically also, which is reported to occupy a majority of bandwidth usage and I/O. You might see the Service Host: Unistack Service Group category in Task Manager.

Luckily, you can disable Windows Defender service fast and easily.

3) Click Start button and choose Settings

4) In the search box, type in defender and choose Windows Defender settings from the list of choice. 

5) Turn off the Real-time protection and Cloud-based Protection.

You might see the notification popping out from the bottom right corner, you can ignore it. 

Option Five: Change the settings in Google Chrome & Skype

For some, this is a problem caused by the combination of Skype and Google Chrome browser. Similar issue with other programs could also cause 100% disk usage. Here is the solution provided for you to fix the problem with Google Chrome and Skype only. 

1) In Google Chrome, click the three-dot icon on the upper right corner and choose Settings from the list of choice. 

2) Scroll down to the bottom of the page and choose Show Advanced Settings…

Then go to Privacy category and un-tick the option Prefetch resources to load pages more quickly

3) Make sure that your Skype is officially off and it is not running in the task bar. 

Follow the path C:\Program Files (x86)\Skype\Phone\

4) Right click the option Skype.exe and choose Properties

5) Then go to Security tab. Choose Edit

6) Highlight ALL APPLICATION PACKAGES and tick the box in the Allow Write option. Click Apply and then OK to save the change.

Now check your disk usage in Task Manager to see the change. 

Other Option

Note: A million thanks to our warm-hearted reader Javier for the following solution. 

This issue could also be caused by some Advanced Host Controller Interface PCI-Express (AHCI PCIe) models running with the inbox StorAHCI.sys driver due to a firmware bug. 

a) First, identify if you are running the inbox AHCI driver (StorAHCI.sys): 

Open Device Manager, then go to IDE ATA/ATAPI Controllers category. Under this category, double click the AHCI controller

Then navigate to Driver tab, and click Driver Details. If you can see storahci.sys stored in a path of system32 folder, then you are running the inbox AHCI driver. 

b) Close the Driver Details window. Now go to Details tab. From the drop down menu, choose Device Instance Path. Right click the path and choose Copy

c) Type regedit in the search box of Start panel, then hit Enter to run Registry Editor. Then follow the path: 

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\PCI\ <AHCI Controller>\<Random Number>\Device Parameters\Interrupt Management\MessageSignaledInterruptProperties

Double click the MSISupported key and change the value to 0

d) Restart your computer after the change. 

3) If your high disk usage is caused by WPR_initiated_DiagTrackAotLogger_WPR System Collector.etl, please refer to the post below for more information:

Fix High Disk Usage caused by WPR_initiated_DiagTrackAotLogger_WPR System Collector.etl

4) If the high disk usage problem is caused by IAStoreDataSvc (32 bit), please refer to the post below: 

Solve Windows 10 High Disk Usage caused by IAStoreDataSvc (32 bit) 

 Still no change? Why not update your device drivers? Stop your driver problems now with pro version of Driver Easy, the ONE-Click driver updater that automatically helps you detect, download and update device drivers that are missing and/or outdated in your PC. 

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Sophie Luo, in Technical Tips Tags: performance
  1. Thanks a bunch disabaling superfetch and fixing my page file worked for me now I can use my laptop again for more than 5 min at time

  2. I have had this problem for a long time. I did most of suggested fixes. Probably everyone should do all of those. Because I am not sure what really fixed. For me all the suggested changes did not fix until I did following. But these suggested changes are needed to really fix. So do all of them including below what I did

    * Add more RAM
    * Adjust the pagefile to more than recommended. I doubled it.
    * I disabled cortana
    * I uninstalled skype completely
    * I uninstalled Norton completely

  3. Thank you, thank you, thank you!
    This problem has been getting on my nerves for a while now. No matter what i tried nothing seemed to work.
    Found this followed a few of your steps, and then boom, a nice smooth disk usage.
    Superfetch never occured to me. I tried so many other services, but it was that one that seemed to be the pain in my… well, you know what.
    Thank you for this article. Life-saver

  4. Brilliant post, OP, most comprehensive I’ve seen, and I’ve searched this topic a bunch of times over the last year. Thanks! I disabled Search, no effect; disabled Superfetch, disk use dropped to “background normal” of 1-4%. Fingers crossed, that’s it. Why MS have Superfetch on by default I do not know. “Maintains and improves system performance over time” – really?! Ya think?!

  5. it fixes it for only a few minutes and then the disk usage percent hits 100% and my game freezes. help me please. i’ve tried every fix on this page and still nothing.

  6. Uninstall your chrome browser and skype. Then check your disk usage. Your disk usage could be 0%-2%. Good luck GUYS

  7. Hey, just have a problem that because my disk usage is at 100%, I can’t actually run command prompt as administrator. When I click to do it the screen fades (as if the “are you sure you want to do this” box is in the middle of the screen), but it isn’t. Any fix for this? Thanks

    1. Hi, Sam.

      From your description, it seems that there is something wrong with opening the Command Prompt in administrative mode.

      Please try the following methods:

      1) Try via another account. It could be a guest account or the admin account.

      2) Right-click the desktop – New – Shortcut.
      In text box, type cmd, then hit Next. Name it Elevated (so you know you’ve applied admin privileges).
      Now right-click this shortcut > Properties > Shortcut > Advanced > check off “Run as Administrator”.

  8. IT WORKED OMG THANKYOU VERY MUCH. Just did option one and two, and suddenly the disk usage droped to 3 percent. Thankyouuu <3

  9. OP,
    Thanks so much for putting all this information together. I spent days working on the in-laws’ system after finally getting the Windows 10 upgrade to work, only to have it freeze about ten minutes after booting, with disk usage at 99% or 100%, and nothing visibly responsible for the usage in Task Manager or Resource Manager.
    I used the Show Services trick after following the additional links, added all the I/O columns to the view, and started stopping services. I finally got lucky on the first one I tried – Afcdpsrv.exe (Acronis Nonstop Backup Service). When I stopped this service and set it to disabled, the problem finally stopped.
    The installed version of Acronis TrueImage 2014 is 17.0.4515. There is an update patch available – I am not sure if it resolves this issue, but I will likely just uninstall the software, as it is not being used.

  10. I tried all the tricks but you have suggested very good way to optimize the windows 10 as per the PC resource. Only by disabling windows search service my laptop become very fast and responsive further the hard drive activity becomes normal and now I again start loving my PC. Thank you brother.

  11. Thank you so much, this finally helped me with my 100% disk error i’ve had for a while! Very good guide, 5/5!!

  12. OMFG!!!
    i Swear To God .. Everything Started Moving Rapidly after i disabled windows defender !.. God! .. please guys disable it fast i promise it will enhance your pc preformance

    1. OMG THANK YOU!!!!!!
      i kept getting 100 disk no matter what i did until i saw your comment and decided to try it.
      AND IT WORKED!! after like 10 seconds it went down to 1% disk and can start playing games again without lag.
      People, give this a try and see if it works for you.

    1. Hi, Josh. Could you please make sure that you are running the command in administrative mode? You need to choose Run as administrator when selecting Command Prompt. Please try again.

  13. I have a friend running Windows 10 on a laptop, last night it said it was doing an update or something… this morning it was in sleep mode, when they login they get a blank screen with a flashing menu bar at the bottom, can get nothing to run except task manager. This shows Explorer.exe running at 80-100 CPU and the laptop gets hot with the fan working all the time. Stopped Explorer and CPU goes down to 6-10% and cooling fan goes off. But without Explorer nothing works… any suggestions? Cheers

    1. Hi Bryn. Are you sure that this only happens after the update? What was the update exactly? An update on the device drivers or the Microsoft Creators update? If possible, please consider performing a system restore on his laptop. The system restore feature is shut down by default, so he or she needs to turn it on before this problem occurs.

      If you need more help, here is a post for you and your friend:

      There are instructions of refresh and reset in the above post. If system restore is out of the picture, please have a try at performing a refresh.

  14. I have a brand new computer acer i bought 2 days ago, did every step on the list and nothing changed… is this computer faulty? should I take it back? please let me know thank you! disk usage still at 100% that shouldn’t be the case for a brand new laptop right?

    1. Hi, Ryan.

      It seems that you need to take your newly purchased PC back to the vendor to see if there is anything wrong with the hardware.

      It is still very hard to say what are the causes of this problem. We can only hope that this is not triggered by hardware.

  15. So quick question anyone else here only have the 100% problem with a simple game running even everything at very low graphics settings, I see most steps are for if you’re just like on google or on desktop wondering if these fix game issues before I try them.

  16. deleting the temp files(690Mb) by running %temp% in cmd itself reduced my disk usage from 100% to 5%

    1. Best solution ever, del Temp files. It reduced mine to 1% from 98%. You are one in a million. Be blessed.

  17. Hi, is there a way to keep Windows Search disabled? I would disable it but every time I restart the computer it runs again. Any fix to that? Thanks.

    1. Yes, you can do that by following the instructions on Method One, in the section “If you want to disable Windows Search permanently”. It requires that you go to Services to make some change to the startup type of this service.

  18. “Search index” with invalid entries in the control panel/index options was the cause of my issue. Realized it when stopping the search index service and killing the searchindex process in task manager. Had to stop both before it would release. C drive usage returned to normal. Immediately went into index options to uncheck those invalid entries, click ok. The entries cleared and Search Index started back up. After a few seconds was done, releasing the C drive again.

  19. I noticed “windows update” and “windows module installer worker” at the top of my disk usage. I disabled them through services window and now my PC is back running smoothly. Now I’ll just have to update manually, which in my case is no big deal. As long as I don’t have to deal with hour long bouts of my PC being totally unresponsive.

  20. I managed to get rid of 100% disk space taken up notification by deleting my temporary memory files – clearing my recycle bin, clearing my browsing history and deleting unnecessary files in my downloads folder.

  21. the first option disabling windows search was so helpful it brought my disk usage down to zero thanks so much 🙂

  22. When i was on the top of this page my Disk size was showing (99%-100%) now when i reaches at the bottom of this page i.e. comments box my disk size is now (1%-2%).(after following given steps)
    I recommended stop Windows defender that is option four.

  23. I can’t change the value on MSISupported to 0, it gives me an error and don’t let me change it, please help.

    1. Hi, Sergiy. Could you please take a screen shot of the error message that you see and then send it back to me? I will see what we can do from there.

      Thanks in advance for your reply.

      Looking forward to fixing this problem for you.

  24. My case was because of the adobe pdf reader update. After upgrading, the 100% problem has just gone. Hope this help.

  25. In my case STEAM was causing this 100% issue :// Uninstalling took like 15 minutes (!!) but worked like a charm. Strange, it wasnt visible in the manager window!

  26. i have a nice system that is being held back from disk usage problems. it happened directly following switching my motherboard, CPU, and RAM. i have tried everything in this post, tried several different versions of windows, tried a different HDD, tried different SATA cables and ports but i still get 100% disk usage every time im using an app or installing something otherwise it is normal during idle. anyone have any suggestions? (all drivers are up to date)

  27. Thanks so much!!! Once I did the skype option, my disk went from 100% to 0% and there is no more lagging or freezing, thanks again. 🙂

  28. I cant believe it. I did the skype thing and my disk usage went instantly from 100 to 2% LOL… now its around 25-50 percent but it’s WAY better.

  29. Hi, I just wanted to say thanks for this thread. I tried basically everything suggested here in the article and comments, and nothing worked. Finally, I replaced the SATA cables to my two HDDs as user “A S” suggested, and it seems to be fixed the issue. I was skeptical it was going to work when I first read it, but I was ready to scrap my entire computer at that point, so I figured, what the heck, I’ll try it, and so far everything seems to be working great. So my suggestion to other users having the same issue and nothing else is working, try replacing the SATA cables before attributing the issue to faulty HDD.

  30. Hi everybody. I had an annoying 100% disk activity problem on my main “C:” SDD drive (I also have 2 additional HDD with no issued) which appeared after 3 to 5 minutes of logging to windows rendering my PC almost completely useless. Although 100% disk activity, disk usage was only about 5%, so a service or program causing the problem was very unlikely and most likely there was a driver problem. I did’t see that so clearly at first, so I tried everything on this list… unsuccessfully. But finally I did solve my problem by upgrading my Intel SATA AHCI drivers to the latest release. That was kind of problematic because I upgraded to windows 10 from windows 7 with IDE SATA Controller so I had to follow online instructions on “How to Enable AHCI in Windows 8 and Windows 10 after Installation” in order to switch to windows’s standard SATA AHCI driver first and then upgrade to Intel’s latest driver using Driver Easy. It was only this last step the one that made my problem go away. Hope this help someone else!

  31. Hey there, i’m having a hard time deleting all the ‘temp’ files as part of the 8th process of option 3. When I select all the files, i get the message, ” this action can’t be completed because the file is open in Microsoft Office ClickToRun Service.” I have tried pressing ‘try again’ below but the same message reappears. Also, the only programs in the background whilst attempting to do this process is chrome, edge and file manager. Thanks

  32. Thanks,
    Actually the temp file part was the culprit I think, ran ccleaner and got 56 GBs of these and cleaning did wonders.
    Now it is at 5 %!!!

  33. Hey all
    I can’t do any of the suggested options because the high disk load is stuck on the Please Wait screen before the login screen, I’m running windows 10 latest build, the problem started after I updated to the latest 1607 build but not right away, it worked for a couple of days after the update then went south from there. Now I can’t do anything at all, tried a system restore to no avail. Any suggestions?

    1. Hi, Hamza.

      Please try the steps below to see if they help.

      1) First we need you to launch your Windows 10 into Safe Mode.

      It seems that you are unable to start your computer now, it is suggested that you perform a hard reboot.

      a. Press and hold the power button on your computer until it powers off.
      b. Press the power button on your computer to turn it on.
      c. Repeat step a) and b) until you see Please wait during the boot. It usually takes three repeats (more than three repeats if this is not the first time that you did this) for it to come up. You need to try until you can see the Please wait coming out.
      d. Follow the path: See advanced repair options > Troubleshoot > Advanced options > Startup Settings > Restart > click F4.

      If you can log into the desktop, please:

      a. Press Windows key and R at the same time;
      b. Type msconfig and hit Enter.
      c. From the System Configuration dialog box, click the Services tab;
      d. Check Hide all Microsoft services and select Disable all
      e. Navigate to Startup tab and choose Open Task Manager
      f. On the Startup tab in Task Manager, select each item and click Disable
      g. Exit Task Manager
      h. On the System Configuration dialog box, click OK, and then restart your computer

      Once you are in the Clean Boot environment, it is now time to pinpoint the service causing the problem:

      a. Enter System Configuration dialog box as before, and navigate to Service tab
      b. Check Hide all Microsoft services
      c. Select the upper half of check boxes from the list and clear the others
      d. Click OK and then reboot the system

      These steps will help you narrow the cause of your problem.

      If you can identify and locate the problem, you can disable the related programs or uninstall them.

      Also, you can try run a SFC scan:

      Hope this is helping you.


  34. Hi there, I had a question. I’m having the issue with it being 100%, and currently going down the list to see if anything helps. I’m now at the virtual memory part… but don’t understand it whatsoever ^^; like, where do the numbers for the little bit of math come from? I prefer knowing lol. And like, what am I supposed to put for initial size… sorry, had me a little confused, so it may be a dumb question. And sorry if someone asked already. Thank you in advance.

    1. Hi,

      Sorry that I wasn’t making myself clear enough.

      To figure out what number you should set your virtual memory to, first you need to know the size of the RAM running on your PC.

      You can find this piece of information in Control Panel > System and Security > System. You should be able to see an option named Installed memory (RAM). Mark down this figure.

      For example, my RAM is 16GB, so the figure I should enter in the Maximum size box is (1024 x 16 x 1.5 = 24576 MB).

      The box for Initial size has already been filled automatically, you don’t need to worry about it.

      If there is anything we could to to help, please feel free to ask.

      1. Hi! I also would like to know the initial size. When I follow the instructions, the initial size does not appear automatically which is why I’m a little confused. Thank you in advance!

        1. Hi, thanks for the update.

          If the initial size box is not filled, please enter the same number that you can see in the Currently allocated category, which is on the bottom of the same window.

  35. Hello all – I have had this problem now for a quite a while. If I left the computer at the 100% disk it did sometimes sort itself out and was usable but then next time 100% again. So I started to apply the Option 5 but at the point where I was meant to highlight ALL APPLICATION PACKAGES – this line was NOT THERE! But today my wife said that Skype on her phone had updated and I wondered if there was a new version for my SONY computer using Windows 10. There was! so I updated (took a while as the old Skype was still hogging the disk) but eventually and after a reboot Skype is now running OK. So get the latest update – It MIGHT fix it. Give me my old mainframe computer – it never did this sort of thing!

  36. Only one thing what helped me is – i turned off all my notifications in settings,and thats it. Easy ;). Hope it will help others too

  37. Every folks, Every time I restart my Windows 10 Pro desktop I get 100% for around 5-10 mins then all is good. I permanently disabled the Windows Compatibility process sometime ago and nothing obvious shows up in Resource Monitor since (various system processes). Before I try all the various suggestions above does anyone know if post startup 100% utilization is symptomatic of any particular issue ?

    1. Having disabled Windows search and Superfetch my son was still getting this problem on his i7 6700 Asus laptop with 1TB 7200rpm hard drive. Solution: I bought a brand new laptop which worked fine and was blazing fast until… he activated his OneNote account on it. The new laptop immediately slowed to a crawl and showed the 100% disk usage error. I asked him to reverse all the steps he had taken in setting up the laptop, last one first. The culprit is OneNote published by Microsoft Corporation and now included as part of the Windows 10 OS. I dug out the old laptop and booted it, It works fine until I start OneNote, disk usage immediately hits 100%, and when I End Task One Note it falls back to normal usage levels. I did this a few times and the result is always the same OneNote = 100% usage.

  38. I’ve been trying every solution on the web for months now. Nothing has worked for me. None of the above. But I CRACKED IT THIS MORNING!!!

    Windows 10 seems to be super sensitive for the RAM configuration. I had 8GB + 2GB and it all showed as usable RAM in properties and Belarc. But my harddrive kept running at 100% all the time and sometime machine was unusable.

    But I took a chance and removed the 2GB and VOILA! Machine ran at full speed on one 8GB module without swapping to harddrive 100% of the time.

    Then I went a step further and swapped the two RAM modules to opposite slots and IT WORKED. All 10 GB working at full speed now!

    Hallelujah! P.T.L.! Seriously.

  39. I’m kinda over the edge to smash my notebook into some wall… have tried everything, Everything but disk usage remains at 100%. I have to leave the notebook for half an hour whenever it freezes, till the System process releases the disk. And mostly no processes are using much of disk but still usage is 100%. Its a Sony Vaio with an i7 and 12G RAM.

    I changed security from windows defender to avast/tried disabling, ran disk checkup, disk fragmentation,disabled Windows Search, disabled superfetch service, virtual memory is high enough, changed the settings in google n skype, don’t even use skype and tried other options too like updated All the drivers that needed to be updated.

    If there are any more solutions, please share!

    1. Hi, Jim.

      There are some useful tips in comment section that have helped a lot of users. Would you please also try them and see if your problem could be resolved?

      Thanks in advance.

      Please keep us updated. Thanks again.

    2. Jim, try this:

      I’ve been trying every solution on the web for months now. Nothing has worked for me. None of the above. But I CRACKED IT THIS MORNING!!!

      Windows 10 seems to be super sensitive for the RAM configuration. I had 8GB + 2GB and it all showed as usable RAM in properties and Belarc. But my harddrive kept running at 100% all the time and sometime machine was unusable.

      But I took a chance and removed the 2GB and VOILA! Machine ran at full speed on one 8GB module without swapping to harddrive 100% of the time.

      Then I went a step further and swapped the two RAM modules to opposite slots and IT WORKED. All 10 GB working at full speed now!

    3. I can feel you mate… I’ve almost kicked my laptop yesterday when it got stuck for 20 minutes.

      It’s impossible to work with it 🙁

    4. I feel you Jim, I’ve almost kicked my laptop yesterday. It’s impossible to work this way. I’m always 100% sure that it’s a Windows 10 problem.

  40. One thing I did that seemed to make a huge difference is set the visual effects settings to best performance.

    In the file Explorer right click “this pc”
    Click “proporties”
    On the left click “advanced system settings”
    In the “advanced” tab click “settings” for the performance
    In the “visual effects” tab click the option “adjust for best performance”
    On the bottom click apply.

  41. As soon as I disabled Windows Defender my pc took a sigh of relief suddenly I went from 100% disk usage to like 10%…

  42. I’ve had 95-100% Disk usage for a while now. I happened to notice a Windows Compatibility Telemetry running on the task manager a few times and just once, after months of dealing w/this issue, I noticed it was on the top of the list for usage for a moment.

    I googled & found this website:

    Instantly I was back down to 2 to 5% disk usage…Running very intense games on high settings, multiple programs…everything. I can get it up to 7%, but no higher.

    FINALLY…It’s taken almost a year, but my computer is finally cooperating properly again.

  43. Hey I did option 2 & put the disk check to run …it’s been 2 hours since it started & it’s only been at 10% for almost all of that time. Is that normal ? How long should the disk check take ?

    1. Hi, the length of the time takes to run the disk check depends on the size of the driver and whether you have run the check before. For some, the disk check could take up to sic hours, for others, it could be one to two hours or just thirty minutes. It will take longer time if you are running Windows 7 operating system.

      If you suspect that the check is stuck somehow, please restart your computer, and then run the disk check one more time.

  44. Hi,
    My disk was 100% usage and the system blocked. I could see in the system event viewer some warnings with event id 129 about a device restart for storahci. It seems to be related to the windows disk driver. This link explains how to change the configuration for the AHCI driver and solve the problem:

    Now the problem seems to be solved for me.

  45. Mine was caused by a failing SATA cable on a secondary non-SSD drive. Pulled my hair out trying everything but when the symptoms went away after putting a replacement drive in, then reappeared on that new drive shortly afterwards, even with all the services disabled and registry entry changed, I finally thought to try a new cable. Totally solved it, reverted all settings and have been good for a few weeks now.

  46. I had this problem for weeks. By chance, I switched off AVG Software Protection and the disk usage immediately dropped to 0%. I switched it back on and in seconds it was back to 100%. Switched it off again and back to 0%. I’ve left it off. Looking for Windows 10 problems appears to have been a wild goose chase for me.

  47. Quite by accident I tried to move a dozen video files off my disk to backup. Everytime I did this my pc locked up on one remaining file. Disk at 100%, zero traffic. Then I realised I had file backup on and it was freezing everytime it tried to copy that one file. Once it was deleted everything was fine.

  48. I don’t get it–why do WE have to fuss with this or cast about the web for solutions? Why can’t those overpaid coders at Microsoft get off their techie-geek butts and stop the logjam from mucking things up in the first place?

  49. thank you for all solutions. It’s finally worked for me after i did deleted all Temp files. if anyone still experiencing 100% disk maybe you should try this one first.

  50. Okay so I have completed all of these steps and there is no change. I even tried some of the solutions in the comments such as disabling adobe flash player but that still didn’t work. I have heard about a problem to do with windows cumulative update [Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB3201845)] not installing properly. I don’t know if this has anything to do with the disk problem or not. When i go to settings/check for updates. It takes ages to find it and when it does it get’s stuck at 0%. I don’t know wether this could be a virus causing the disk issue or not. I disabled malwarebytes as said in the steps above so i haven’t done a check for any viruses yet. Do you think resetting the pc (removing all files and doing a re-install of windows) could be a solution to the disk problem and the windows updates? Thanks.

    1. Just did the scan using malwarebytes and threats were detected. The cumulative update seems to have finally installed so i’ll restart and see if that changes anything.

        1. The update installed fine. After the check and before the update my disk said 4-6% which is normal. After the update it was back at 100% again. From looking at my task manager out of what you can see, what is needed and what isn’t. This is usually much more background processes than i ever used to have. here are two images showing all of the current and background processes i have.

          1. Is the top one malicious? my friend doesn’t have it in his so it could be a fake system 32 file (a disguised virus) Is it safe to remove?


            This is a screenshot from my security task manager. The process at the top looks suspicious to me. Is it a fake system 32 file which is malicious? My friend checked his and he didn’t have it. I have a feeling this could be causing some of the high disk usage so should I remove it? Recently by the way my disk usage has gone back down to 0-4% on average and only occasionally jumps up to 99-100% when i open an app or when i go idle. Could you tell me if this is normal or not?

            1. Hi, Joseph.

              This .exe file is installed with Intel(R) Wireless Bluetooth(R) device driver. Some users report that this could be a sign of virus on your computer.

              Please use your trusted antivirus program to scan and see if you can detect any possible virus. If found any, remove them completely.

              Or you can reinstall this device driver from device manager manually. First download the intel bluetooth driver from the support website (or you can use Driver Easy to scan and download it for you), then go to device manager to uninstall this device driver. Restart your computer after this. If your PC automatically helps you detect for and download the bluetooth driver, than you are good, if not, you need to double click the downloaded file and run the installation.

              If you find this process too much, you can use Driver Easy to automatically detect and download this device driver for you.

              Please keep us updated if you find the suggestions helpful.

          3. I had my disk usage that mostly stayed between 80% to 100% and many times the pc would freeze, requiring hard-reboot. I implemented the settings yesterday. The disk usage still goes up after reboot but only for a few minutes, then comes down. So far, no freezes. I noticed in my task manager that the task which causes high disk usage is Service Host:Local Service (Network Restricted). This task periodically starts Superfetch service (the service appears as sub-task in the main task-list). During the time Superfetch is on, the disk usage becomes very high, before reverting to normal in a few minutes. Stopping Superfetch resolves this temporarily, until the next reboot, when it starts Superfetch again. I am going to observe for sometime. If I get any more freezes, I will disable Superfetch permanently by going to Services (run as Admin.. I think).

      1. Uninstalling the last windows update is the only thing that worked for me. now drive is down around 2% as usually and not 98% – 100%

    2. I had the same exact issue. I followed all instructions and nothing worked. (I even uninstalled Skype and Chrome, and disabled virtual memory entirely.)

      I tracked it down to the Windows Compatibility Telemetry process. Once I killed that, things went from 99% to like 12%. I then went and permanently disabled these two processes: “Connected User Experiences and Telemetry” and “dmwappushsvc” by right clicking on the start menu, choosing “computer management,” then expanding “services and applications” and disabling both processes.

      1. I did not approve Microsoft to collect any info, yet it continues within task schedules etc. Disabled compattelrunner.exe (via services?) & then opened task scheduler & removed any CEIP entries. Now my laptop runs quicker & cooler. Otherwise MS will research your PC & it will slow to a crawl as they check EVERY file!

  51. Hi!

    Nice work on doing this. Unfortunetly None of this helped me solve my problem. The disk usage still spikes 100% at random moments and stays there almost all the time. The thing that gets this spike is almost aways the System itself. I already did a defragmentation, but it only solved it temporarely (about a day), did all the steps in here before, but no good.

    I did update my drivers recently, same for the BIOS.

    It’s an Intell Core i3, 4GB RAM, 1TBHD. Win10.

  52. The Google prefetch was my problem. 100% to 9% Disc. You are a Superstar and I cannot thank you enough. I have been battling for hours. I love you!

  53. Thanks. I tried your solutions and it worked. However, when i restarted my pc, the disk usage is at 100% again, whilst all the above have been set. Kindly help 🙁

    1. Hi, if you have tried all the options above and the problem remains, please try to disable your flash display to see if it helps.

      Type “chrome://plugins” in the address bar in your Google Chrome browser, then hit Enter. You will be able to see an option named “Adobe Flash Player”, click the “Disable” button under it. Then check to see if the disk usage is still 100%.

      Please feel free to contact me if the problem persists after this.

        1. Please try the following procedure:

          1) Run Command Prompt as administrator.
          2) Type “wpr-cancel” (no quotation marks) and hit Enter.
          3) Then go to Task Manager. Go to Services bar, locate DiagTrack option (you can press key D to faster locate this option), right click it and choose Stop.

          Or you can try this permanent fix:

          1) Run Command Prompt as administrator.
          2) Type “sc stop DiagTrack” (no quotation marks) and hit Enter.
          3) Type “sc delete DiagTrack” (no quotation marks) and hit Enter.
          4) Open Task Scheduler (by typing task scheduler in start search bar), then go to Task Scheduler Library > Microsoft, delete the following items:

          Everything under “Application Experience”
          Everything under “Autochk”
          Everything under “Customer Experience Improvement Program”
          Under “Disk Diagnostic” delete only the “Microsoft-Windows-DiskDiagnosticDataCollector”

          Please let me know if it helps.

    2. I had the same problem, when I restarted Windows the problem came back but I tried disabling windows defender and the disk’s percentage of use turned into 11%. I hope it help you.

  54. The first time I did all of this it worked, I restarted my PC and the problem came back. I tried everything again, but it didn’t seem to work.I couldn’t do Skype step, since I don’t even have Skype. I’ve had this problem for a long time, but I remember that this didn’t happen when I first built this PC. My PC is not bad nor old. If someone has a solution please help me, I get stressed out no much, my PC got to the point of giving me a blue screen and after a restart telling me that i had a disk problem. PLEZ HELP…

    AMD FX 8350
    GeForce GTX 970 FTW EVGA
    Western Digital 1TB, “Black” I think
    12GB of RAM
    750 Power supply
    Windows 10

    1. Hi, David.

      In your case, it is suggested that you try to memorize the notification on the blue screen if it ever happened again, then go to our blue screen sections to see if you can find solutions accordingly:

      If you cannot find direct resolutions from these posts, please reply and inform me about the notification on your screen so I could be of further assistance.

    2. I am also having the same results. It might be something to do with the combo of AMD FX 8350 and the GTX 970 EVGA FTW, because I have both.

  55. I need help as well, as I am writing this comment, my PC disk usage is changing to 30% from 10%, and when I open windows explorer. I have tried all the tutorials available but non of them seem to work. I opened task manager and I see that “Google Chrome” and “System” has the highest MB/s. Any help on that will be HIGHLY thankful.


    1. Hi, Charlie.

      Have you updated your Windows drivers yet? Especially display drivers and network adapter drivers? If not, please do so.

      Also, if you can see an updated BIOS for your computer on your computer manufacturer, please download and update it too.

      You mentioned that Google Chrome is one of the applications that is hogging the disk usage, have you tried upgraded it as well? Or have you changed the settings as instructed?

      Please reply at your earliest convenience the update of your situation so we could provide further help.

    1. Did you try the scanning and repairing drive step? I’m curious to know how it went and if you did it roughly how long did it take

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