Whether you receive an error message saying “Your computer was unable to start.” or literally your computer was unable to start, you can find solutions in this post.

Error message from Startup

If you see receive the message saying “Your computer was unable to start. Startup Repair is checking your system for problems”, you may drown into an endless loop. Don’t worry, you’re not alone. This problem should be easy to fix.

Try these fixes:

You don’t have to try them all; just work your way down the list until you find the one that works for you.

  1. Boot to safe mode
  2. Repair corrupted system files
  3. Launch Startup Repair
  4. Restore your system
  5. Reset or reinstall Windows

Fix 1: Boot to safe mode

When your computer has problems, it’s always a good idea to enter the safe mode to trigger the reason for this issue. Safe Mode is the mode that loads with a minimum set of drivers, software, and service. It’s used for troubleshooting the problem so that you can find the reason for the problem.

Fix 2: Repair corrupted system files

This “Your computer was unable to start” error may be related to system files. When the system files were broken or corrupted, it may cause this issue. There’re ways to solve it:

Repair & replaces corrupted system files with Reimage

Reimage is a powerful tool to repair and rebuild Windows. Reimage Windows Repair is tailored to your specific system and is working in a private and automatic way. There’s no harm to your PC and no worries of losing any programs and your personal data.

1) Download and install Reimage.

2) Open Reimage and run a free scan. This may take a few minutes.

3) You’ll see the summary of detected security issues on your PC. Pay for the repair plan and you’re able to repair corrupted profiles with one click. Click START REPAIR to start the repair process.
Note: Reimage comes with a 60-day Money-Back Guarantee.

Run sfc /scannow command

The System File Checker (SFC) is a useful command-line utility to scan and repair protected system files in Windows. Here’s how to run it:

1) On your keyboard, press the Windows logo key and the R key at the same time to invoke the Run box.

2) Type cmd and press Shift+Ctrl+Enter together on your keyboard to open Command Prompt in the administrator mode.

Note: Do NOT click OK or just press the Enter key as that won’t allow you to open Command Prompt in the administrator mode.

3) Type sfc /scannow (or copy-paste) and press Enter. Then wait for the verification is 100% complete.

4) Restart your computer to check the issue is fixed or not.

If the result indicates there are broken files but SFC can’t fix them, you can turn to Deployment Image Servicing and Management (DISM) Tool for deeper examination and repair.

Fix 3: Launch Startup Repair

If your computer system is Windows 8 or higher, you can use Startup Repair to fix this problem. This tool will scan your computer and fix the problem automatically when finding it.

1) Press the Windows logo key + I (the ‘i’ key) together and click Update & Security.

2) Click Recovery in the left pane and then click Restart now.

3) Click Troubleshoot.

4) Click Advanced Options.

5) Click Startup Repair.

6) Wait for the tool to finish the process and restart your computer.

Fix 4: Restore your system

If you can’t figure out the reason for this “unable to start” issue, you can restore your system back to a previous restore point. This will roll back all the device drivers and software updates to the condition when you created the restore point.

Note: System restore will affect system files but won’t affect your personal files. Some of the files stored on your system may get overwritten by the previous files. So make sure you back up all your important files before doing it.

1) On your keyboard, press the Windows logo key + Pause key together, then click System protection.

2) Click System Restore.

3) Click Next and it will open the below window.
Choose a restore point where the Windows didn’t show any errors. Then follow the on-screen instructions to finish the process.

Restart your computer to check the issue is solved or not.

Fix 5: Reset or reinstall Windows

If all else fails, you may have to reset Windows, or maybe even reinstall it together. We all know reinstalling will delete all the data on your hard drive, you have to back up all your important files before doing it. But with Reimage, there’s no need for lengthy back-ups, support phone calls, or risk to your personal data. Reimage can reset Windows to the state exactly when it was just installed without affecting third-party software.
Here’s how to use it:

1) Download and install Reimage.

2) Open Reimage and run a free scan. This may take a few minutes.

3) You’ll see the summary of detected security issues on your PC. Pay for the repair plan and you’re able to repair corrupted profiles with one click. Click START REPAIR to start the repair process.
Note: Reimage comes with a 60-day Money-Back Guarantee.

But treat these options as a last resort, because they both take quite a long time.


Your computer won’t start

It’s vexing when you push the power button and wait for your computer but it is unable to start. The reason could be various, but to fix this issue you can follow these fixes.

  1. Check your power supply
  2. Corrupted system
  3. Hardware issue

Fix 1: Check your power supply

No matter what computer you’re using, a PC or a Mac, when you couldn’t launch your computer, check the power supply first. Ensure that your computer has power. Check your PC has plugged into its socket firmly. If you’re using a laptop or Macbook, plug it in and power it up.

Note: If it’s your laptop or Macbook, make sure you’re using the right type of charger but not a pirate one. Because a pirated charger could harm your device.

1) Turn off your computer completely.

You might feel confused when your computer is unable to start how to turn it off? It’s because there might be some reason to prevent your computer from booting up but part of your computer may be working at that time. So you have to make sure your computer has turned off completely.

2) Wait at least 10 seconds. Make sure your power supply has connected properly. Turn your computer back on.

Your computer should be started properly. If it’s unable to start, move to the next fix.

Fix 2: Corrupted system

After you push the power button, if you hear the machine working noise and see the texts running on the screen but can’t boot up normally, it’s probably a system failure.

When you encounter this situation, you’d better boot to safe mode to troubleshoot the problem.

Fix 3: Hardware issue

If the above fixes don’t work, it’s probably a hardware issue. If one of the components inside is old or broken inside, your computer may unable to start. In this situation, if your computer is still in warranty, you’d better contact customer service for help. But if your PC is out of warranty and you have certain knowledge to check the hardware, you could try to open the computer case to fix it.


Hopefully, this article has helped you resolve the “Your computer was unable to start”error. If you have any questions or suggestions, please leave a comment below, and we’ll do our best to help.

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