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WDFLDR.SYS is missing or corrupt


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#1 MikeJohnDave56

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Posted 17 May 2009 - 09:08 AM

Hello,

I am Jason and i recently encountered a problem on my vista home premium machine (I'm running home premium, 2 gb ram, pentium 4, and 6800gt video card/audigy 2 zs sound card) in which i get an error message at boot with these details:


Error code: 0xc0000221

File: WDFLDR.SYS

Windows has failed to start because a required system file is corrupted, or missing.


No new hardware changes were made, no software installed, just randomly, it happened. I did use Auslogics Registry defrag/cleaner and CCleaner shortly before this happened, but i don't think that would cause a problem. I have googled it but other threads about it were not useful. I guess that the problem is not widespread enough for many people to have gotten it and reported it.

- I can't get into Vista in normal or safe mode with any of the options in the boot menu.
- I CAN access my files on the vista hard drive through another operating system (XP) on my computer.
- I tried replacing the file from another vista machine, but it says i do not have permission to edit the file.
- I can't use System Restore from the vista cd because it says i have no restore points.
- I tried using the Repair Computer feature in the vista cd but that has failed every time.
- I can't run SFC/ scannow from the cd because it says "Windows Resource Protection could not perform the request operation."


Thank you so much!!

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#2 MikeJohnDave56

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Posted 18 May 2009 - 05:41 AM

Bumping for reponse.

#3 garmanma

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Posted 18 May 2009 - 09:35 AM

I did use Auslogics Registry defrag/cleaner and CCleaner shortly before this happened, but i don't think that would cause a problem.

Don't be so sure. This is why Bleeping Computer does not endorse the use of registry cleaners

I tried replacing the file from another vista machine, but it says i do not have permission to edit the file.

Taking ownership of a file or folder:
http://www.vistarevisited.com/2008/01/09/h...older-in-vista/
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#4 MikeJohnDave56

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Posted 18 May 2009 - 06:33 PM

I read over that website about taking ownership of files. Only one problem. I cannot login to my Vista account to do that! I am using my alternate XP isntall on another hard drive, and i am having trouble finding a way to replace them through XP.

Is there any way to gain access to Vista privileges through an external OS?

#5 garmanma

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Posted 18 May 2009 - 06:47 PM

This is for a different problem, but the procedure just might work

http://tc2.atspace.com/0020-AutorunsMistake.htm
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#6 MikeJohnDave56

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Posted 19 May 2009 - 05:19 PM

I tried this now. It didn't do anything becuase the autorun is not what is causing the problem.

Is there any possible way i could edit the registry to repair that file instead of doing the steps mentioned?

Edited by SuperTyphoon, 19 May 2009 - 05:35 PM.





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