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rustyspork

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booting problem, other solutions failed

When I boot up my computer, the manufacturer screen loads, followed by the Windows XP Home Edition loading screen, and then a blue error screen appears. It reads 'A problem has been detected and Windows has been shut down to prevent damage to your computer.' Below that is 'UNMOUNTABLE_BOOT_VOLUME,' followed by generic instructions for how to solve the problem, which instruct me to boot in Safemode and disable any recent software or hardware that could be causing my problem.

Safemode and all other modes, however, fail to load and end up displaying the same error screen. The error screen also mentions modifying some BIOS settings, but upon loading my computer's BIOS (PhoenixBIOS 4.0 Release 6.0, the computer is made by Toshiba, the BIOS are accessed with F2) at startup, only generic, useless settings are displayed. I have never seen another computer with BIOS settings this simplistic.

I have come across various solutions to this problem throughout the internet, but all of them involve modifying the BIOS settings my computer lacks or using the 'repair' or 'recovery console' functions of a Windows XP Full Home Edition disc, which I understand comes with some (most?) computers but did not come with mine.

I urgently need to fix my computer, and I sincerely hope a solution to my problem exists. I'll try almost anything, but formatting my hard drive is not a viable backup option due to my lack of a reinstallation disc.

Sincerely, John
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omyowhy

John - Can you post the error number or the complete error msg? have you made any changes recently (hardware/software install)?
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ASKER

I never make hardware changes, but I made several software changes yesterday. I installed both Winamp, a media player (alternative to Windows Media Player) and DirectX 9.0. I can see how both of these could possibly cause problems, but each required a restart after installation, and both were successful, so the entire concept confuses me.

Following, the exact error message:

"A problem has been detected and Windows has been shut down to prevent damage to your computer.

UNMOUNTABLE_BOOT_VOLUME

If this is the first time you've seen this Stop error screen, restart your computer. If this screen appears again, follow these steps:

Check to make sure any new hardware or software is properly installed. If this is a new installation, ask your hardware or software manufacturer for any Windows updates you might need.

If problems continue, disable or remove any newly installed hardware or software. Disable OS memory options such as caching or shadowing. If you need to use Safe Mode to remove or disable components, restart your computer, press F8 to select Advanced Startup Options, and then select Safe Mode.

Technical information:

*** STOP: 0x000000ED (0x812D0B20, 0xC0000006, 0x00000000, 0x00000000)"



And that's it. Hope this can clear things up.
Ah, I seem to have made a possibly misleading and confusing typo. Part of the error message does not read ".......Disable OS memory options......" but ".....Disable BIOS memory options....."
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omyowhy

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I had this same error today myself. However it was during an XP install and it turned out that this particular machine did not like to have a 40pin cable on a ATA100 drive (even though it wasn't an ATA66/100/133 controller). Switched to an 80-pin and it fixed it.

That was my resolution to my UNMOUNTABLE BOOT VOLUME error
I'm assuming this is not good. I used the program for creating the Boot Discs, and loaded the recovery console successfully. Upon typing chkdsk /r, however, I received the following message:

"AUTOCHK.EXE could not be located in either the startup directory or the CDROM drive.

Type the fulll path (including drive letter) for the location of AUTOCHK.EXE:"


I guess this is caused because the program expects to be run from my CDROM drive, while it's actually run in the floppy drive. It might be a technical problem though, I suppose. Any insights? Should I reload the whole thing and look for the file with the 'dir' function?
I would suggest you use a ntfs for dos boot disk

http://www.ntfs.com/boot-disk.htm
hmmm, on the computer I'm on currently, there are two locations where AUTOCHK.EXE exists on the hard drive: in C:\WINDOWS\system32 and in C:\WINDOWS\I386. Neither location seems to work in the recovery console I hve up.
http://www.bootdisk.com/bootdisk.htm

more bootdisk options here
if theres enough room on the last boot disk copy AUTOCHK.EXE  on it and try again
All I could think of was to take a blank disc and put AUTOCHK.EXE on it, then put it in after the console was fully loaded and I might not need disc 6 anymore, and I think it worked. CHKDSK started fine, but it's going ridiculously slow, even for a disc. It went  up to 75%, then stopped, then flashed numbers past very quickly and ended up at 50%, then went to 51%, and now nothing's happening. I hope it's not frozen. Is there a way to tell, or maybe even to speed it up?
Thanks to everyone who helped me here. Using the Boot Discs, and the disc with AUTOCHK on it, I fixed my computer. Have a nice day!

Sincerely, John
I've got a similar error (0xc0000006) for lsass.exe

i've submitted my question here:
https://www.experts-exchange.com/questions/25042801/Help-with-recovering-from-data-corruption-in-system-files.html

glad to hear it worked for you rustyspork... i hope it works for me