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Windows 7: Can't boot Windows after driver install, diagnosed problem, can't fix

12 Aug 2014   #1
andrepd

Windows 7 x64
 
 
Can't boot Windows after driver install, diagnosed problem, can't fix

My Windows won't boot. Here is a summary of what happened so far:

I was playing a game when it suddenly started stuttering for a few seconds and black-screened. I rebooted and I saw no problems, but when I booted a game again and the dedicated GPU started working, about 3-4 minutes into the game I ran into the same problem. Rebooted again, and in the account select screen I got a BSOD. So I figured I would reinstall the drivers. I ran DDU in safe mode to clean the AMD drivers, as I always did when upgrading, rebooted into regular Windows and installed the drivers, and was prompted to reboot again. The drivers weren't detected in device manager, with error code 14 telling me to reboot to use the device. I did, and now I can't boot into Windows: it just gets stuck forever on the Starting Windows logo.

I did this whole process again: safe mode clean drivers with DDU, reboot into normal mode, all okay but no drivers (so no aero and stuff), install drivers, reboot, drivers not detected and device manager error 14 telling me to reboot, try to reboot but stuck forever on Win logo.

I can, however, boot into safe mode at all times, whether before or after installing the drivers. However, I notice it is very slow, and it gets stuck for ~2 minutes on loading windows/system32/drivers/amdkmpfd.sys (apparently related to AMD, so it's GPU related). It boots into a black screen with just the cursor for 20-30 seconds before the safe mode desktop appears.

I don't know what to do. I tried running "sfc /scannow" in safe mode and "sfc /scannow /offbootdir=c:\ /offwindir=d:\windows" in recovery mode > command prompt. Both ways I get this message after it finishes: "Windows Resource Protection found corrupt files but was unable to fix some of them." I don't know what to do to fix the corrupt files it apparently detects (probably amdkmpf.sys). I cannot interpret the log file it creates at /windows/logs/cbs/cbs.log.

Windows is unusable: either I can't use neither the integrated Intel nor the AMD graphics, or I can't boot at all! And for all that matters I have no issue running linux. It detects the AMD 7970M just fine. So I don't think it's a hardware problem (I don't know if there is a diagnosis tool to check for this)

Anyway I would be very glad for your help. If you need any more details to help me please ask, I'm new to this kind of things. Thanks!

EDIT: I also don't know if this is the appropriate forum. Sorry if it isn't :x


My System SpecsSystem Spec
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13 Aug 2014   #2
andrepd

Windows 7 x64
 
 

Anyone? Anyone knows what hanging on boot on amdkmpfd.sys means? And what can I do to fix the corrupted files sfc /scannow found?
My System SpecsSystem Spec
13 Aug 2014   #3
Indianatone

Windows 7 x64 Ultimate and numerous virtual machines
 
 

Hi andrepd
Welcome to Seven forums. It looks like your video drivers system files have become corrupted. Download Safe MSI which will allow you to run the ATI Graphics card software uninstaller in safe mode. Do that and reboot then download and install your graphics card software drivers, if you are overclocking return the settings to normal.
SafeMSI.exe - Free download and software reviews - CNET Download.com
If you don't have another PC make sure you select safe mode with networking to allow you to get online.
My System SpecsSystem Spec
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14 Aug 2014   #4
gregrocker

 

In addition work through these other Troubleshooting Steps for Windows 7 to go over your install most thoroughly. Be sure to enable Device Installation Settings then run all Important and Optional Windows Updates as there may be drivers that Win7 wants or important patches required to make them work.

This is a driver-complete OS in the installer and via Windows Update. Users don't even participate with drivers in Windows 8, and those changes were developed in Windows 7.
My System SpecsSystem Spec
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 Can't boot Windows after driver install, diagnosed problem, can't fix




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