Unable to startup Windows 8.1 after meddling with the registry

I made a bad mistake following someone advice on the problem unable to detect external drive. I have a buffalo external drive which I cannot detect for months even though the external drive is spinning (I can feel the vibration) and there is a a slight led lighting but not as bright as it used to be. So after searching for solution on the internet, I found one that requires two changes in the registry.

The changes I made was to delete the upperfilters and the lowerfilters of the registry below:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967- E325-11CE-BFC1-08002BE10318} 


After I made these changes, my windows 8.1 starts up with error and I have tried with start up with safe mode, restore, etc. but it just continue to start up with error with options to restart or shut down. I did not back up the registry. When I say it starts up with error, it means windows did not complete the start up so I can't get in to change the registry back. Please help.





  • Edited by kwng 13 hours 0 minutes ago
April 4th, 2015 2:19pm

If you have access to another Windows 8.1 PC, try create a USB recovery drive:

http://windows.microsoft.com/en-US/windows-8/create-usb-recovery-drive

Free Windows Admin Tool Kit Click here and download it now
April 4th, 2015 5:18pm

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