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Windows 7: BSOD, error 0x1000000a , 0x1000007f ntoskrnl.exe & Rt86win7.sys


25 Sep 2012   #1

Microsoft Windows 7 Professional 32-bit 7600 Multiprocessor Free
 
 
BSOD, error 0x1000000a , 0x1000007f ntoskrnl.exe & Rt86win7.sys

Pc Specs - Amd Athlon II X2 240 (Regor). Asrock M3A785GXH/128M. Kingston KVR1333D3N9/2G 2GB DDR3 Ram. Cooler Master eXtreme Power Plus 390W. Windows 7 Professional.

The PC was assembled around 2 1/2 years back. Except for the PSU that was bought around 4 years back. Unfortunately I can't remember when exactly. I'll find out.

The issue at present, is random but frequent BSOD crashes. Sometimes while using the computer, mostly surfing and videos. Other times, when idle, like downloading.

I have replaced two hard drives since the BSOD crashes first started around a year back. It first surfaced around a year back. Now it's happening again. There was random restarting too. The pc would also not boot several times.

Memtest86 gave a 'unexpected interrupt' error, in garbled words, when I ran it overnight.

Couple of days back, a technician was called in. According to his diagnosis, the CMOS settings had become corrupt due to some changes I had made in the BIOS. I had overclocked the mGPU settings briefly. But reverted to default settings after the problems. I didn't touch the memory timings. He also added that the CPU was overloaded by this and was overheating. This morning it BSODed again.

I haven't run any cpu stress tests yet. I can't think of any other details as I am short on time(the pc might crash).

My System SpecsSystem Spec
.

25 Sep 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

I'm not on my debugging machine but there have been recent changes to that realtek driver you are getting messages from.
Realtek

ps if memtest86 gets a hit, you have a problem.
I've never had memtest86 falsely alert, it has always been bang on.
The nature of your error with it is odd though. I'm left wondering if memory or possibly motherboard problem.

I don't think it's cpu, when the cpu actually starts to fail things get much, much weirder.
My System SpecsSystem Spec
25 Sep 2012   #3

Microsoft Windows 7 Professional 32-bit 7600 Multiprocessor Free
 
 

Hey Magus, thanks for taking the time to reply so quickly. It must be inconvenient due the difference in time zones. I'll install the new realtek lan drivers. I'll also run memtest again. I'll wait till you can debug again.
My System SpecsSystem Spec
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25 Sep 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

meanwhile if you have more than one stick of ram in the machine you could try removing them alternatively and seeing if memtest fails with either stick specifically or fails regardless of which one is in place. If you do actually have bad ram debugging is going to be rather pointless as anything can fail when memory is not reading/writing properly.
My System SpecsSystem Spec
25 Sep 2012   #5

Microsoft Windows 7 Professional 32-bit 7600 Multiprocessor Free
 
 

I'll get right to it. There's only one stick of ram on the machine btw.
My System SpecsSystem Spec
25 Sep 2012   #6

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

Don't suppose you have access to another machine you could pull the ram out of for testing purposes?
My System SpecsSystem Spec
25 Sep 2012   #7

Microsoft Windows 7 Professional 32-bit 7600 Multiprocessor Free
 
 

I could borrow a friend's. Just curious, is it because the problem might be with the memory controller in the motherboard?
My System SpecsSystem Spec
25 Sep 2012   #8

Microsoft Community Contributor Award Recipient

Windows 7 x64
 
 

It would either be the memory itself or a problem with the socket/motherboard
Memtest86 doesn't really stress anything else. Memory is generally cheap and easy to replace these days though, so lets hope it's that.
My System SpecsSystem Spec
26 Sep 2012   #9

Microsoft Windows 7 Professional 32-bit 7600 Multiprocessor Free
 
 

I ran memtest again, this time it passed. Could it be the corrupt CMOS settings that was making memtest give that weird erorr? Aww heck, now I can't remember if I first ran memtest, before or after the technician's diagnosis of the CMOS being corrupt. Matter of fact, I didn't even ask him how he fixed it! Isn't a CMOS corruption when you get a 'Checksum error' at bootup? Gotta lay off the mary jane.

Also, I had a another BSOD problem with a WRkrn.sys file after I uninstalled AVG. Turned out it was a Webroot AV driver. I had to do a 'last known good configuration'. All in all, I haven't had a BSOD since yesterday.

Right now, I'm thinking, I could sit on it and wait for it to happen again. Or I could run some stress tests? OCCT? Should I risk it though, considering my PSU is old and only 390W? Thanks for all your suggestions and time Magus.
My System SpecsSystem Spec
26 Sep 2012   #10

Microsoft Windows 7 Professional 32-bit 7600 Multiprocessor Free
 
 

I forgot ask, does memtest restart the computer after the tests are done?
My System SpecsSystem Spec
Reply

 BSOD, error 0x1000000a , 0x1000007f ntoskrnl.exe & Rt86win7.sys




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