Solved BSOD after automatic shutdown due to overheating processor

What happened ?

Was rendering a videoclip, processor got too hot and computer shut off. After rebooting I got this :

In my first attemp to repair this problem I encountered the problem discribed in

http://www.sevenforums.com/backup-restore/274204-enable-system-protection-local-disk-c-cmd.html
I do have a few restore points, but no system image
This seems to be fixed, but still couldn't boot.
I tried the bootrec commands, chksdk's RAMtest : all OK

So : this is where I am now when I do a "normal" boot:

STOP c000021a Fatal System Error (BSOD)
--------------------------------
Verification of a knownDLL failed. system process terminated unexpected with a status of 0x000012F
(0x009831a0 0x00000000)
System has been shut down.
[REM] after a while :beeping mobo > same sound as overheating processor (maybe processor very busy ?)

Boot with bootdisk.
-------------------
- Advanced Boot Options
Safe Mode.
System Recovery options
Select keyboard
Choose OS : Windows 7 Ultimate (recovered), 57138MB, (CLocal disk
RESTART COMPUTER TO COMPLETE REPAIRS
Finish (to restart immediatly)

Boot from HD
------------
STOP c000021a Fatal System Error
Verification of a knownDLL failed. system process terminated unexpected with a status of 0x000012F
(0x00f18f20 0x00000000)
System has been shut down.
[REM] beeping mobo > same sound as overheating processor

Boot with bootdisk.
-------------------
- Advanced Boot Options
System Recovery options
Select keyboard
Choose OS : Windows 7 Ultimate (recovered), 57138MB, (DLocal disk
Startup Repair cannot repair this computer automaticly
System Restore
chose for last restore point.
chose Programs (E and Local Disk (C
SYSTEM RESTORE DID NOT COMPLETE SUCCESFULLY
details : failed while scanning file system on drive D:\
drive might be corrupt...
error during system Restore (0x80070057)
(same problem with other restore points)

goto http://answers.microsoft.com/en-us/windows/forum/windows_7-system/system-restore-error-
0x80070057/0b8c7c81-3fe9-4d43-8369-1a41a5756171

> Boot from CD, goto DOS prompt typed : sfc /scannow
a system repair pending....
> EXIT

Never had any heat problems while doing all these tests (exept on BSOD), so most likely processor =OK
What now ?

ps : thanks in advance !

For a STOP 0xc000021a, you should try to boot into http://www.sevenforums.com/tutorials/666-advanced-boot-options.html and choose Last Know Good Configuration (advanced).

Even if it also fails, can you boot into safe mode? If so, then stress test the CPU in safe mode.
Hardware - Stress Test With Prime95

Here is a list of beep codes based on BIOS vendor.
Computer POST and beep codes
It will help you to identify the issue by determining the POST beep codes.

Let us know the results.

Wow ! what a fast reply ! thanksalot !
but ... I assume I can't do the stress test because I can't get into windows at all... When I boot from HD, I see the colored windows logo for a few seconds and then : BSOD
I have been testing and trying for the last two days, and the processor never failed, also several RAMemory tests passed succesfully, so I think that there's nothing wrong with any of the hardware...

Maybe one more odd thing : in DOS I find my OS on D: although I'm absolutely sure I've installed it on C:
when I DIR c: I see what is (was) on my E: drive. DIR D: is my system partition. Also all other partitions changed names in DOS.
Maybe somehow I have to rename my D: (what seems to contain the OS) to C: ?
But I'm not sure how to do that without loosing stuff ...
I'll first try (again) the Last Know Good Configuration.
I'll keep in touch !

Thanks again !

PS : When I look in the problem details (in Startup repair) there is one thing that draws my attention :
Problem signature 07: MissingBootManager...

OK.
Last Know Good Configuration gives me

STOP c000021a Fatal System Error (BSOD)
--------------------------------
Verification of a knownDLL failed. system process terminated unexpected with a status of 0x000012F
(0x00712100 0x00000000)
System has been shut down.

:shock:

I restarted the computer normally (from HD) and did the startup repair. I got the message : Windows cannot repair this computer automatically.
I went through the "Diagnosis and repair details and everything seemed to be OK (all error codes 0x0). At the end I read:

Root cause found :
---------------------
Unspecified changes to system configuration might have caused the problem

Might this be a hint to get my computer back on the road again (without having to reinstall windows and all programs)?

thanks in advance !

I went further and tried system restore.
After a while I got the message :

rstrui.exe - Application error

The instruction at 0xfc0eca53 referenced memory at 0x0dd8ff94.
The memory could not be read
Click on OK to terminate program

My next step will be Windows Memory Diagnostic.

Memory test done, computer rebooted and gives me a BSOD :

PAGE_FAULT_IN_NONPAGED_AREA

bla bla bla

STOP 0x00000050

etc ...

If you've confirmed CPU overheating then first use these Cleaning Tips / Removing Dustbunnies (NCIX Tech Tips #13) and How to Remove and Apply Thermal Compound [Updated Tutorial] - YouTube

Then work though these steps for Troubleshooting Windows 7 Failure to Start.

Hmmm ... memory doesn't seem to be OK.
Downloaded and now running Memtest86 v4.20...

Thanks, Gregrocker, but I cleaned (vacuumed) the processor and all fans just two weeks ago, and the computer is NOT in a dusty enviroment (eg : no carpets on floor...)
I do know how to vacuum PC's. (eg : prevent fans from spinning while vacuuming etc ...)
Nevertheless thanks ! I'm running a memtest now ...

Have your done OS repair from your 7 install DVD? [with of course the DVD reader set as first boot device in bios]

Go to repair instead of install.

Also found this:

Windows 7 64, Blue Screen Stop Error: 0x00000050 during reboot or - Microsoft Community

Notable:

"Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM)."

So it's possible that CPU is toast: L2 is CPU cache, and there is nothing to fix it other than replacing if that is the case, not saying it is, though: BUT IT IS A SUSPECT.

If you didn't let that CPU cool down, and rebooted it right after it turned off, yeah it could easily be kaput now.

I would try each stick of RAM separately, also.

The first step in my mind is monitoring the temps and make sure you are not overheating. Nothing else matters until you make sure you are not running hot.

So is this thread's title mistaken and your CPU is not overheating? That would be what to address first if it is.

Cleaning dust may not be enough with an overheating CPU which needs the thermal paste replaced as shown in the video I provided.

If the CPU temp is normal and still functioning then disinfect first as OS may not repair otherwise. If no OS appears to repair when booting into System Recovery Options on disk, try jumpstarting it to appear using Bootrec.exe tool as listed in Troubleshooting Windows 7 Failure to Start

gregrocker said:

So is this thread's title mistaken and your CPU is not overheating? That would be what to address first if it is.

Cleaning dust may not be enough with an overheating CPU which needs the thermal paste replaced as shown in the video I provided.

If the CPU temp is normal and still functioning then disinfect first as OS may not repair otherwise. If no OS appears to repair when booting into System Recovery Options on disk, try jumpstarting it to appear using Bootrec.exe tool as listed in Troubleshooting Windows 7 Failure to Start

Click to expand...

Hi, Gregrocker.
Thanks again for your concern !
Like stated in my very first msg: what most likely happened is that the CPU got too hot while rendering a video clip. I was not at my computer while this happened. I started rendering and I went away. When I got back to my comp I saw the BSOD. The mobo shuts the power down when the cpu-temp gets too high (set to 70°C) I think that the mobo just shuts down, and doesn't really CLOSE running programs (AND windows) right before cutting off the power. So I guess that it kinda has the same effect as pulling the mains plug in the middle of (heavy) calculations where windows is involved in. So WINDOWS got corrupted.
In the meanwhile I did several repair actions with the original Win DVD, followed a few relevant threads from here and never had problems with the CPU. I never had a crash while doing these tests/repairs. (been testing/repairing continuously for almost two days now ...) For the moment I'm running Memtest86+ (from a boot CD) for about 2.5 hrs. So far NO errors, but I'm only at 48%. So I leave it running to complete at least one full test.
Just about 2 weeks ago I vacuumed all the heat sensitive parts in the way it has to be done. I did this because I heard the beeping warning while rendering. After I did this, the CPU ran about 10°C cooler. (had a temp monitoring sofware installed > "Speccy") I did a few renderings after vacuuming and only on a very few moments I saw the temp go over 60°C. So I didn't worry anymore about overheating and left the comp alone while rendering. Although I made sure that while rendering it was the only prog that was running.
Anyhow ... when the memtest has finished (without failures) I'll follow your advice and try the bootrec.exe
And of course I'll come back here to post the results !

Thanks man, you make me feel like "not being alone on this world"

http://memtest.org/#downiso

Layback Bear said:

The first step in my mind is monitoring the temps and make sure you are not overheating. Nothing else matters until you make sure you are not running hot.

Click to expand...

Thanks Layback Bear !

I can't monitor temps because I can't run windows... if you might know of a temp monitor in DOS : please let me know and I'll post the readings !

Faladu said:

Also found this:

Windows 7 64, Blue Screen Stop Error: 0x00000050 during reboot or - Microsoft Community

Notable:

"Bug check 0x50 usually occurs after the installation of faulty hardware or in the event of failure of installed hardware (usually related to defective RAM, be it main memory, L2 RAM cache, or video RAM)."

So it's possible that CPU is toast: L2 is CPU cache, and there is nothing to fix it other than replacing if that is the case, not saying it is, though: BUT IT IS A SUSPECT.

If you didn't let that CPU cool down, and rebooted it right after it turned off, yeah it could easily be kaput now.

I would try each stick of RAM separately, also.

Click to expand...

I'm running the MEMTEST86+ now ... it seems to be a very reliable test. It also tests L1, L2 and L3...
But I'll have to wait for the final results for about 2 hrs more.

Faladu said:

Have your done OS repair from your 7 install DVD? [with of course the DVD reader set as first boot device in bios]

Go to repair instead of install.

Click to expand...

Yes Faladu. I did this already several times, but no results I also followed some relavent threads from here, but again : no results...

Nevertheless : thanks alot for your concern ! If you might have other ideas : they'll be mostly appreciated !

http://memtest.org/#downiso

If you got overheating beep codes after vacuuming the dust out then you still have critical overheating. Those beeps are not normal and mean critical failure, not something you can ignore.

You should have monitored the CPU temps to compare the max temps for your CPU easily found online. Now try booting into BIOS setup to see if it shows any readings.

I'm not sure if one of the boot disks available online has temp reading programs. We don't support them here anyway.

Everything that possibly can be done is here for Troubleshooting Windows 7 Failure to Start leading up to if necessary rescuiing your files to reinstall.

What I'd probably do just to preserve Win7 on HD while answering if the CPU is toast is unplug this HD and try a test install to another HD, or boot Partition Wizard bootable CD to shrink C to do a test reinstall of Win7 to see if it installs and runs. If you have 4 primary partitions you'll need to convert one to Logical using PW first so it doesn't convert the disk to Dynamic. Partition Wizard Move/Resize Partition Video Help.
How to set partition as Primary or Logical.

Dear Gregrocker,

I did monitor CPU temp with Speccy.
When I was rendering video, my temps went up to 70°C
Then I cleaned and vacuumed and temps went up to 60°C
So I set mobo to warn (beep) at 65° and shut down at 75°
Things went fine after that. Once in a while I ran over 65° (ONLY while rendering) and it beeped, but only for a very short time (1 second or less) So after monitoring temps for about 2 weeks, I thought I could trust the system. So last Saturday I had to render a videoclip, and left the computer alone. When I came back, I had the BSOD.
So the safety system worked, and shut down the computer. I have been using (only testing and try repairing) this computer now for about 3 days, it never crashed. I did not load windows, but all tests and repair progs worked just fine. So I'm quite sure that the CPU is OK. I also did the MEMTEST68 test during about 5 hours (tested 130% > one full + 30%) and didn't get any errors. I tried many things discussed on this forum, but none of them seemed to be able to restart my WINDOWS. As long I use Bootdisks, everything works fine, but loading WINDOWS from HD (safe mode or whatever mode) always takes me to the BSOD.
When I used Partition wizard, I could see all my directories, also the directory containing the WINDOWS folder. When I asked Partition wizard to make this partition the windows boot partition, It said that it couldn't find the windows folder ... ?
PS : The windows partition is on an SSD...

Again : I thank you for your interest and the time you spend to help me out. I really hope to get my computer working again without having to reformat/reinstall ...