Computer fails to boot, mountmgr.sys is corrupted

[BlackBeetle]

Hello everyone, and apology if this is in the wrong category.

So this morning, my computer was completely fine, absolutely nothing out of the ordinary. However i come home, turn in out, to see that the BIOS was attempting to discover disk errors or whatever it was. After failing to do so, i tried to do a system restore, to what was 6 days ago (i use my pc daily, and it's been working fine). Thought it was a bummer, but oh well, better that than nothing. However it also failed.

After this i tried using the command tool, and put in something similar to:
cd windows\system32\logfiles\srt
srttrail.txt

In this file, the only error i've come across is that mountmgr.sys is corrupted, saying "Root cause found: Boot critical file c:\windows\system32\drivers\mountmgr.sys is corrupt"
I've been trying to find a solution like crazy since i need my computer asap, but can't find anything that's either legit or with this very file being problematic.

If anyone needs any more info please feel free to ask, and thank you

 

[Colif]

is there anything on C drive you want to rescue? try making this on another PC: http://www.howtogeek.com/howto/windows-vista/use-ubuntu-live-cd-to-backup-files-from-your-dead-windows-computer/

Also, on another PC, download the Windows 10 media creation tool and use it to make a win 10 installer on USB

lets see if we can get into safe mode
change boot order so USB is first, hdd second
boot from installer, on 2nd screen after languages, choose repair this pc, not install
choose troubleshoot
choose advanced
choose start up options
hit the restart button
choose a safe mode (it doesn't matter which) by using number associated with it.
PC will restart and load safe mode

if you can get to safe mode, try running system file checker
open command prompt (admin)
type SFC /scannow and press enter
Hopefully system file checker can fix it, another thing you can run if SFC finds nothing wrong, is to paste this into same window (spacing needs to be exact or it won't work):
DISM /Online /Cleanup-Image /RestoreHealth and press enter
then restart PC and see if its any better

that srtttrail. txt problem can be a nuisance as often it won't let you do a reset either and only real choice is a fresh install but we see how it goes with the safe mode first.

 

[BlackBeetle]

I really, really really want to avoid doing another reset, i prefer to try everything i can before having to do another fresh install on windows (relatively new HDD, had to do a fresh install then)

I cannot enter safe mode, as it automatically tries to repair, and i'm back to square one. Is there a way to force it to try and not repair it on start up?
I did try to execute the commands you said from the troubleshooting command prompt, but it fails. The scannow command, after reaching 100% verification, it says "Windows Resource Protecton could not perform the requested operation".
And the other command you said,
"Error: 50.
DISM does not support servicing Windows PE with the /Online option.
The DSIM log file can be found at ..."
Any ideas? Or must i really do another clean install?

 

[Colif]

yeah, dism needed to be run from a command prompt inside safe mode, it doesn't like it offline.

it seems 1 common reason you get the error is a bad ram stick, try running memtest86 on your ram, one stick at a time. any errors are too many and stick needs to be replaced. It creates a bootable USB so you don't need windows to run it.

try this from command prompt
choose command prompt
We need to use the Bootrec.exe tool. Click on command prompt and type in the following commands, one after the other:
bootrec /RebuildBcd
bootrec /fixMbr
bootrec /fixboot
Exit
Now go ahead and reboot your system. In some cases you may need to run some additional commands.
bootsect /nt60 SYS or bootsect /nt60 ALL

what motherboard do you have as should be able to set USB as boot and then not get the repair screens.



could try system restore again
try start up repair as well

 

[BlackBeetle]

Didn't work either.
The RAMs didn't pick up any error, and they seem (at least) to be all ok. They are also new, the same age as the HDD and motherboard. And the motherboard is a Z-170A Asus
And the start up repair did not work either.
Seems like i have to do another clear install, right?

 

[Colif]

if you also tried the bootrec thing,
did you try chkdsk /f /r from cmd?

I don't like this error at all, here are some suggestions you haven't tried yet: http://windowsreport.com/windows-10-automatic-repair-couldnt-repair-pc/ (don't download anything)

 

[BlackBeetle]

Just to update.
No solution worked. None at all. So i had to do a complete windows installation from nothing. Thank you

 

[Colif]

Yeah, sorry, its about best answer to that error