Out of all the Blue Screen errors, the worst one, in my opinion, would be the one where your computer cannot even boot properly. Because of this, even if you want to reinstall Windows, you cannot back up your important files. Hence, it would not be feasible to fix the system files, and reinstalling usually talks a lot of time and resources. One such error is UNMOUNTABLE BOOT VOLUME BSOD on Windows 11 or Windows 10. This Stop Error occurs if Windows cannot access the volume containing the boot files.
Fix UNMOUNTABLE_BOOT_VOLUME Blue Screen
1] Use System Restore
If you have a system restore point, you can try restoring your computer from it.
In this case, you will have to boot in Advanced Startup Options and then do this.
Read: Windows will not boot up or start.
2] Fix the Master Boot Record
Master Boot Record or MBR is the location and architecture of the operating system installed. And if this architecture or location has been tampered, it can cause multiple BSODs.
To carry on this fix, while in the Advanced Startup options screen, click on Advanced Options.
Then select Command Prompt.
When the command prompt window opens, type in the following command,
bootrec /fixboot
Wait until the process finishes, then restart your computer for the changes to take effect.
3] Run CHKDSK
Use the Command Prompt while in the Advanced Startup Options to run the CHKDSK command in Command Prompt and try to fix your computer.
4] Use Automatic Startup Repair
Boot from a bootable Windows Installation Media.
When you are on the initial Windows Setup screen, click on Repair your computer on the bottom left corner.
Now, click on Troubleshoot. Then on the other screen, click on Startup Repair.
Now, select the operating system you want to repair.
It will now begin repairing your operating system. Wait while the process is executed.
5] Check Hardware
If you get this message while updating to a higher version of Windows, check that you have compatible drivers for the disk controller, re-check the drive cabling, and ensure it is configured properly. If you’re reusing ATA-66 or ATA-100 drivers, make sure you have an 80-connector cable, and not the standard 40-connector IDE cable.
All the best!
Read: WHEA UNCORRECTABLE ERROR.
Can viruses cause Unmountable Boot Volume?
Well, yes, viruses could cause the “Unmountable Boot Volume” error. If you have doubts, update your antivirus software and run a boot-time scan. If the scan is clean, it could be caused by driver issues.
