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Computer will not boot please help

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#1 truoc06


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Posted 23 April 2015 - 10:24 PM

Hello all!  I have a secondary desktop PC in the house running Windows 8.1 Pro that is used for light surfing and banking from time to time.  I used this PC just today with no issue and had to run some errands.  After returning home and wanting to get on the PC I noticed a blue screen with the title Recovery, Your PC needs to be repaired:  the operating system couldn't be loaded because a critical system driver is missing or contains errors.


File: \Windows\System32\drivers\ACPI.sys


I created a bootable recovery disk using a usb drive and have used that to try startup repair as well as sfc /scannow and the chkdsk commands.  Nothing has helped.  I even tried the copy command to copy system32/drivers over and that didn't work either although I am now getting a different file location error.  The same error pops up while trying to boot except the file is now:


File: \Windows\System32\drivers\intelpep.sys

Error code: 0xc000007b


One interesting thing I did notice was while in command prompt on the usb recovery disk that if I run diskpart and list volumes that it is showing the C drive as being system reserved whereas the main OS is labeled as G.  I can tell that by the amount of space listed.  Is this what is causing my issue?  I have no idea how windows could have gone from C to G if so as I didn't do anything on the PC earlier today apart from some light web surfing and left the computer on while out and about.  I have tried system restore and that fails as well.  I am at a complete loss as to where to go from here other than to reformat which I'd like to avoid if that's possible.  Thanks.


Below is a link to the photo album of pictures I took of the error messages.  Hope these help.





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#2 celalalt


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  • Local time:05:12 PM

Posted 24 April 2015 - 03:51 AM

Try to use bootrec.exe to repair your computer: 7tutorials.com/command-prompt-fix-issues-your-boot-records

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