A blue screen comes up that says a problem has been detected and windows has been shut down to prevent damage to your computer. UNMOUNTABLE_BOOT_VOLUME ***STOP: 0X000000ED (0X86F85C08,OXC0000006, OX00000000,OX00000000)

try to boot to safe mode using F8 key on boot and then recover system or reinstall OS

Hi Stefi,

An unmountable boot volume error means that the operating system cannot boot from the hard drive either because the boot files are corrupted, the hard drive is faulty or there is a problem with the cable connecting the hard drive to the computer. If you are booting your PC and come across a Blue Screen of Death stating UNMOUNTABLE_BOOT_VOLUME, don't despair.

You would need to repair the volume inorder to fix this issues.

To repair the volume, follow these steps:

1. Start your computer by inserting the Windows startup disks or the Windows installation disk if your computer can start from the CD drive.
2. When the Welcome to Setup screen appears, press R to select the repair option.
3. If you have a dual-boot or multiple-boot computer, select the Windows installation that you want to access from the Recovery Console.
4. Type the administrator password when you are prompted to do this.
   
   Note If no administrator password exists, press ENTER.
5. At the command prompt, on the drive where Windows is installed, type chkdsk /r, and then press ENTER.
6. At the command prompt, type exit, and then press ENTER to restart your computer.
7. After you repair the volume, check your hardware to isolate the cause of the file system damage.

If this procedure does not work, repeat it, but type fixboot instead of chkdsk /r in step 5.


Hope this helps .
Please let me know if you need further help

If this is a corruption it may be fixable, again this depends upon your version of windows, however please be aware this may be a corrupt hard drive so you may need to replace this and reinstall.

Try this first

1. Start your computer by inserting the Windows startup disks or the Windows installation disk if your computer can start from the CD drive.
2. When the Welcome to Setup screen appears, press R to select the repair option.
3. If you have a dual-boot or multiple-boot computer, select the Windows installation that you want to access from the Recovery Console.
4. Type the administrator password when you are prompted to do this.
   
   Note If no administrator password exists, press ENTER.
5. At the command prompt, on the drive where Windows is installed, type chkdsk /r, and then press ENTER.
6. At the command prompt, type exit, and then press ENTER to restart your computer.
7. After you repair the volume, check your hardware to isolate the cause of the file system damage.

Turn off your pc and take the side panel off and remove the cmos battery leave for three minutes
and then replace this will reconfigure your
motherboard and hopefully solve your problem.

hi there !

-try t drain everything out of the computer first; remove the power adapter then remove the battery; after 1 minute try again; if problem persists run diagnostics
--while the computer is off, press and hld the "Fn" key then press the power button at the same time to start the test; note down error message then consult manufacturer for the code obtained. if no errors found it is a windows problem; you need to reinstall windows on the computer

cheers!

ARe you using Win98se or WinXp?

Unmountable boot volume is an error you get when your hard drive is failing. You will need to replace the hard drive.

need to reinstall windows it is corrupted

This link should help you a lot. The problem is an unmountable boot volume.

http://www.techtips4u.com/kb/sw/SW00014.htm

Please let me know if this helps you out.

For the issue of BSOD of Unmountable Boot volume, the only solution so far is to reinstall the system. If you are unaware of how to do it, it would be easier to contact Dell technical support and allow them to guide you thru it. (if your warranty is active, it's free)