Windows 10: Critical System driver is missing or corrupt. Automatic repair fails.

e: drive has all the perflogs, program files, program files (x86), users, windows, etc. so changed the command to bcdedit /export e:\bcdbackup
but it still gives... 'The store export operation has failed. The requested system device cannot be found.'

 

Which steps did you perform in the link that ztucker posted?

If that does not work then he may have other options for you to try.

If the above does not work then you can try the registry repair.

 

theres no boot folder on e:\

 

The following command scans integrity of all protected Windows system files and repairs files with problems when possible.


Code:
Sfc /Scannow /OFFBOOTDIR=D:\ /OFFWINDIR=D:\Windows
sfc /scannow /offbootdir=f:\ /offwindir=f:\windows




Please replace partition letter D: with Windows installed partition letter. When computer boots into Windows Recovery Environment (WinRE) environment the drive letter assign to Windows partition may not be C: drive letter because Windows 7, 8 , 8.1 and 10 creates a separate system partition when it's installed from scratch. The system partition contains boot files WinRE assigns the system partition the C: drive letter and the Windows installed partition will be assign any other drive letter usually D: drive letter is assign to Windows installed partition. The Bcdedit /enum | find "osdevice" command can be use to find out the drive letter of the Windows installed partition the output of the Bcdedit command is similar to this osdevice partition=D:. The drive letter after partition= is the drive letter of the Windows partition.



SFC /SCANNOW : Run in Command Prompt at Boot - Windows 7 Help Forums

 

ok the sfc completed and the results are..

 

Overnight try the sfc command again in case these steps do not fix it.

Post an image of the results for these commands:

bootrec /scanos

bcdedit /enum

Post images as you progress in these steps:

1) boot to the Windows 10 iso
2) it may take 5 minutes displaying the windows icon
3) Use the default settings for language, time, currency, and keyboard
4) click next
5) In the left lower corner click Repair your computer
6) click troubleshooting
7) click startup repair (it is expected to fail)
8) click system restore (it is expected to fail)
9) click command prompt
You should see a pop up with title bar: Administrator: X:\windows\system32\cmd.exe
This is the registry backup method:
For each step you must see sizeable file sizes for this to work.
If you see zeros the method will fail.
The command: dir
will be used each step to make sure you are in the proper location and check the size of the files
10) type: C:
11) dir
12) type: D:
13) dir
Choose the C: or the D: drive to proceed. It should be the windows drive and not the USB drive.
14) type: bcdedit | find "osdevice"
This should display the location of the partition and in most cases is the location of the affected drive.
For this post I will use C: however you should pick the drive letter that you found that has the windows files on your computer.
The proper drive will display: perflogs, program files, program files (x86), users, windows, etc
15) type or copy and paste: cd \windows\system32\config
It should display: C:\windows\system32\config>
16) type: dir
It should display: bbi, bcd-template, components, default, drivers, elam, sam, security, software, system, vsmidk, journal, regback, systemprofile txr, etc.
All of the file sizes should be sizeable. If it displays zeros then abort.
Make a new directory and name it backup or something similar.
17) type: MD backup
Copy all of the files into this new directory.
18) type or copy and paste: copy *.* backup
It should now display: bbi, bcd-template, components, default, drivers, elam, sam, security, software, system, vsmidk indicating the files were copied.
Change the directory to regback
19) type: cd regback
It should now display: c:\windows\system32\config\regback>
20)type: dir
It should display: default, sam, security, software, system etc
All of these files must be sizeable. If it displays zeros then abort.
21) type or copy and paste: copy *.* ..
It should now display:
DEFAULT
Overwrite ..\default? (yes/no/all):
22) type: a
It should now display: sam, security, software, system and that the files were copied.
23) type: exit
24) click turn off your PC

 

Please post images of the progress.

 

Please try following command in an admin command prompt and post a screenshot of the result.
Code: DISM /Online /Cleanup-Image /RestoreHealth[/quote]

If there are problems with RestoreHealth, please follow step 6 or 7 (depending on the file you have from the download) from the tutorial DISM - Repair Windows 10 Image - Tutorial

 

I got as far as step 20)... Was no files in the regback folder. Also was already backup and backup1 folders in the config folder there. Are these worth restoring ?







I'll wait for a response, before i continue anymore.

 

Remember, it is about corrupted files, the boot record and registry are not important.

 

tried the dism command.

 

Follow the tutorial I posted 2 posts ago.

 

I looked through the tutorial and don't see anywhere that it talks about not using /online when in a PE environment, Command Prompt or Powershell.

I thought it whould work if booted from a Windows 10 install DVD/Flash drive though.

subby, what are you booting to get to a Command Prompt?

 

I remember it to work in a PE environment, regardless the /online switch, so long as the source is specified.

 

Found this, try it, see if it works:

Code: Dism /Image:\ /Cleanup-Image /RestoreHealth[/quote] (From what I saw in the diskpart output, D: is your OS/boot drive))

More here: How to use DISM in WINDOW PE environment?