Fs_rec.sys

[gammaray]

Hi,

i am trying to solve a friend's pc issue which won't load and get stuck there:

1. install a windows installation disc and restart your computer
2. choose your language settings and click next
3. repair your computer

file : \windows\system32\drivers\fs_rec.sys
status : 0x0000098
info : windows failed to load because a critical sys. driver is missing or corrupt

so far i flushed the BCD and created a new one but i get the same error message.

any hints?

thx

 

[Ketchup]

What version of Windiws? Easiest fix might be a windows restore point. If that doesn't work let Windows do it's repair. If that doesn't work replace the file from the same version on another PC. This file may be available on one of those file download sites, but I have read too many stories about people infecting those, so I don't think that would be a good route.

 

[gammaray]

chkdsk didnt work, last restore point didn't work, windows cannot automatically reapir shit etc. safe mode doesn't work. so you're saying i should copy Fs_rec.sys from another windows 7 to this one? from the command prompt? i'm gonna give it a try

 

[Ketchup]

If nothing else works, that may be your last hope. Very odd issue IMO (but that's part of why I'm here). Hopefully this will get it booting, and we can figure out what caused the problem (the sfc command would help here, either before or after replacing the file.)

 

[gammaray]

ok, i get an even worse message now, except windows "tried" to start.
BSOD
STOP: c000021a {Fatal System Error}
the verification of a known dll failed etc.

hmmm

 

[Ketchup]

Boot to a command line and type sfc /scannow.

I had a feeling it may not like a replacement, but at this point I think we can try about anything.

Deoending on the OS, a repair install may work.

 

[gammaray]

There is a system repair pending which requires reboot to complete. Restart
Windows and run sfc again.

rebooting changes nothing...

 

[Ketchup]

Not good. Is there a recovery partition? Might be time to back up and start that process.

 

[gammaray]

wow, i tried another fs_rec.sys file and now i am into windows...not safe tho, i wonder what i should do?

 

[Burpo]

Back up every thing important on the drive.

 

[cholley]

get something like drive fitness test, run the advanced test, all this OS work might have been done on a failing drive

 

[gammaray]

back to square one if i install windows updates.

file : \windows\system32\drivers\fs_rec.sys
status : 0x0000098
info : windows failed to load because a critical sys. driver is missing or corrupt

so i loaded a restore point i had just made, i am back in windows, but without any updates.

what should i do? besides formatting and reinstalling?

 

[Ketchup]

Good to hear you are back in Windows. Try SFC again.

 

[gammaray]

Good to hear you are back in Windows. Try SFC again.

ok i did, sfc reported errors. says i should reboot for them to get corrected (if it can do so...)

running it a second time now and going to bed for now.

 

[dionasaur]

What version of windows is this?

 

[gammaray]

windows 7 sp 1 x64

well, nothing new really, some windows update go thru no problem, and some get me the Fs_rec.sys corrupted messages.

haven't really took time to install them one by one...
so, a few updates went ahead good and made an image right after. that's where i am at right now.

 

[Ketchup]

Very odd indeed. Hope things eventually get sorted out. Would you mind telling us what model computer this is?

 

[VirtualLarry]

There was a Win7 update that contained Microcode updates for the CPU; one other member reported problems with that update. I think that the thread was in the Motherboards forum.

 

[gammaray]

so they are 4 windows update that made Fs_rec.sys corrupted, i just hid them from windows update, as i don't know why they cause this problem or how to fix them either.

KB2893294
KB2918077
KB2653956
KB2884256

if anyone got a solution, will be happy to try.

 

[Ketchup]

That's funny. I have never had a critical update do something like that.

 

[gammaray]

Very odd indeed. Hope things eventually get sorted out. Would you mind telling us what model computer this is?

its a fujitsu lifebook model AH531

 

[Ketchup]

I could see KB2884256 causing your issues. It caused issues for others when it came out. KB2813956 probably doesn't apply to 99% of users, and I am very surprised that KB2893294 is actually causing any issues on its own, as it is a patch for vulnerabilities, and if you haven't tried it on it's own I would recommend you try that one again.

 

[istenc]

wow, i tried another fs_rec.sys file and now i am into windows...not safe tho, i wonder what i should do?

I have the same problem, fs_rec corruption. I want to replace it with another one as you did but i have no idea about how to do it. Can you tell me how you did it?

 

[Billb2]

You're assuming that it's fs_rec.sys that's bad. The error message says "windows failed to load because a critical sys. driver is missing or corrupt" It doesn't say what system driver is missing or corrupt. It may be something that runs fs_rec.sys or something that needs fs_rec.sys to run.

A quick look with a dependency walker shows that, mainly, it's NTOSKRNL.EXE that needs fs_rec.sys to be running to start NTOSKRNL.EXE.

But the walker also shows that These also need it:
EXT-MS-WIN-CI-XBOX-L1-1-0.DLL
EXT-MS-WIN-FS-CLFS-L1-1-0.DLL
EXT-MS-WIN-NTOS-CLIPSP-L1-1-0.DLL
EXT-MS-WIN-NTOS-KCMINITCFG-L1-1-0.DLL
EXT-MS-WIN-NTOS-KSECURITY-L1-1-1.DLL
EXT-MS-WIN-NTOS-KSIGNINGPOLICY-L1-1-0.DLL
EXT-MS-WIN-NTOS-KSR-L1-1-2.DLL
EXT-MS-WIN-NTOS-STATESEPARATION-L1-1-0.DLL
EXT-MS-WIN-NTOS-TM-L1-1-0.DLL
EXT-MS-WIN-NTOS-UCODE-L1-1-0.DLL
EXT-MS-WIN-NTOS-WERKERNEL-L1-1-0.DLL
EXT-MS-WIN-NTOS-WERKERNEL-L1-1-1.DLL
BOOTVID.DLL
CI.DLL
CNG.SYS
FS_REC.SYS
HAL.DLL
KDCOM.DLL
MSRPC.SYS
NTOSKRNL.EXE
PSHED.DLL

 

[gammaray]

Been a long time! i think i just hid the windows updates that were problematic.