You may come across an UNMOUNTABLE_BOOT_VOLUME Blue Screen of Death error when you power on your Windows 10 computer. It blocks you away from your files and data. To fix this problem, you can try the methods as follows. (Note that you will need a Windows 10 DVD or a bootable USB drive before you proceed. If you have neither of them, you can burn a Windows 10 ISO file to an available USB drive using another computer. Once you have your Windows 10 media prepared, put it into your computer and boot your computer from it. If you don’t know how to do it, please check How to Boot from a USB Drive, DVD or CD. Then you can try any of the methods listed below.) 1) Fix UNMOUNTABLE_BOOT_VOLUME error with Automatic Repair 2) Fix UNMOUNTABLE_BOOT_VOLUME error by Fixing Master Boot Record 3) Fix UNMOUNTABLE_BOOT_VOLUME error using Chkdsk command 4) Fix UNMOUNTABLE_BOOT_VOLUME error by reinstalling Windows 10
b) Click on Troubleshoot on the next screen.
c) Click on Startup Repair on the Advanced options screen.
d) Select Windows 10.
e) The repair will be started immediately. Please wait patiently for the process to be finished.
c) Type “bootrec /fixboot“ in Command Prompt, and then hit Enter.
d) Wait for completion of the process, and then restart your computer to see if the error message shows up.
c) Wait for completion of the process, and then restart your computer to see if it runs normally. UNMOUNTABLE_BOOT_VOLUME blue screen error, you should consider reinstalling Windows 10. a) On the Windows Setup screen, after you finish choosing your language, click on Install now.
b) Follow the instruction following to complete the process of reinstallation. If the methods above are not helpful for solving your UNMOUNTABLE BOOT VOLUME Windows 10 Blue Screen error, it may be caused by issues on your hardware devices. You may consult a computer expert or contact your device manufacturers for further assistance.