msahci.sys BOOT ERROR! HELP ASAP!

Question

Hi, so earlier i was trying to clear space on my C: drive and i thought it would be a good idea to move "users" to D off of C. I was doing that through CMD, i never even got to try to move it because i wanted to restart my computer before but now when i start up my computer it says that msahci.sys is missing or corrupted and will not boot, i dont have my install disk and i do not know how to fix this so please help.

Answer 1

IMHO: USERS is not one of those folders you should be moving after the initial installation as it is references in so many places/in so many ways.

However, having said that, that is unlikely to have caused this issue.  After all - different locations.  ;-)

Assuming the error looks something like this:

 Windows boot manager error

 File: /windows/system32/drivers/msahci.sys

 Status: 0xc000000f

 Windows failed to load because file is missing or corrupt.

You need to be able to boot to external media and get to the proper location with a known good copy of the missing/corrupt file and replace it...

That may resolve that issue - but there may be all sorts of other issues, depending on what all you did that would have caused the one you are seeing now.  You may even end up at this point:

http://www.sevenforums.com/tutorials/3413-repair-install.html\

How's your backups?  Have a recent system image backup?

Answer 2

Hi thabks for the reply, that is what my error looks like and my backups are not recent:(