Just about few minutes ago, my friend call me and asking for help. His laptop getting this BSOD error message UNMOUNTABLE_BOOT_VOLUME.

I think it would be best that I can share this to everyone. Here are the steps you can fix this BSOD error.

1. Restart your computer and press on F12 when are saw the BIOS screen.
2. Select on CD-ROM or DVD drive option and press Enter.
3. When you saw the message Press any key to boot…, just hit on Enter again.
4. When you get into the Windows setup main screen, press on R to enter into the Recovery Console.
5. If required for Administrator password, please enter your Administrator password and press Enter.
6. In the command prompt, type chkdsk /p and press Enter.
7. When complete, type fixboot and press Enter.
8. Press Y and press Enter at the prompt.
9. Type exit and press Enter. System will reboot now.
10. If fail to load into Windows again, please redo the step 1 to step 5.
11. Now, type chkdsk /r and press Enter.
12. Type exit and press Enter. System will reboot now.

The steps shown above should fix the problem.