Unmountable boot volume error is a common Blue Screen of Death (BSOD) error massage. It has been reported since the Windows XP era. Like other BSOD errors, you will see a blue screen saying a problem has been detected and your computer will restart. If this error massage comes repeatedly even after you restart your PC, then you should attempt to fix it.
Causes of the error Unmountable Boot Volume
In most of the cases the Unmountable Boot Volume error is causes by faulty hardware or misconfigured hardware settings. It can also occur if boot related files are corrupted.
Fixing the Unmountable Boot Volume error
Try the following 5 solutions to fix the Unmountable boot volume error in your windows 7, 8 and 10 computer.
Repair your system using a bootable media
If you have a bootable Windows DVD or recovery media, connect it to your PC and restart. If your PC detects the bootable media, it will prompt you to press any key. Then you can choose to Repair your computer. In the next menu, choose Troubleshoot and then go to Advanced options. Finally, select to Automatically Repair your PC.
Remove faulty drivers
In Control panel search for Device Manager. Once the Device Manager is opened, expand the IDA ATA/ATAPI controllers list. Double click on the driver name. A property dialogue will be shown. Click on the Driver tab. Now Roll back driver to previous state. If that option is unavailable, try to Update driver. Restart your PC.
Use Windows error checking tools
(a) Check for errors in the system drive:
Right click on your system drive (usually C drive). Go to Tools tab. Now click on Check now. Mark both the check boxes. Windows will prompt you to schedule a disk check upon restart. Click on it. Then restart your PC.
(b) Check for errors in the RAM:
Press Windows key + R key on your keyboard to bring out the Run command. Type “mdsched.exe” and hit enter. Windows Memory Diagnostic tool will open. Chick “Restart now and check for problems”.
(c) Repair system files:
Right click the Command prompt and run it as an administrator. Now, type: sfc /scannow
This will check and repair any system file errors.
Change settings in BIOS
In your BISO settings change the SATA configuration to IDE. This often solves the problem. Also try updating your BIOS.
Look for other hardware problems
If none of the above methods work, then you should look for other hardware problems. Replace the SATA or Ide cable connected to your hard drive and see if that works. Unfortunately, Unmountable Boot Volume Error may also signal that your hard drive is actually corrupted or damaged. In that case you have to replace your hard drive. But before doing the hard drive replacement, try reinstalling a fresh copy of Windows as a last attempt to fix the issue.