My friends E8500 based comp BSOD's alot [SOLVED]

All right gents of OCN. My friends comp has started to bsod a lot as of late. So first here is all the spec's I could get from him.

Processor: Intel Core(TM)2 Duo CPU E8500 @ 3.16GHz (that is stock)
Mobo: msi p45 neo bios: 1.B
RAM: 8 Gb (4x 2Gb)
Graphic card: Radeon HD 4870
OS: Windows 7 Pro 64 bit
PSU: Antec Earthwatts 500W PSU (sonata case)

Symptoms: The computer crashes as far as we can tell spontaneously. Some times it runs fine for hours at other times it can BSOD multiple times within a few minutes (we barely get it booted an in to windows before it goes down). It generates a wide range of error codes and only a fraction make it to the dump. Unfortunately my friend could not find the paper that he wrote down all the errors on but I will put it up here as soon as it is found. Some of the codes we know were on there were:

0x00000124
0x1000007E
0x0000003B SYSTEM_SERVICE_EXCEPTION
0x0000001E
0x0000003D INTERRUPT_EXCEPTION_NOT_HANDLED


We have run prime95 for lengthy times without problems as well as memtest. My guess was that the mother board is bad that is until I asked him to run Hwmonitor and check the voltages. The +12V sits at 10.02V we get the same reading with SpeedFan. I know that thees software can be unreliable and true enough the bios reeds 12V and if we put a multimeter to a molex connector we also got around 12v. Even so the 10.02V makes me uneasy as the voltage could drop form what it is shown as in the bios and the molex can be on a different rail. All in all I still suspect the mobo more but hey it does not hurt to ask a second opinion and no unfortunately we don't have another PSU to test with

Other things that have been tested/ruled out:
The radeon 4870 is a swap in card that is known to be good so its very unlikely to cause issues.
The hard drive has been checked and formatted and runs a fresh windows installation.
Edited by Bit_reaper - 1/24/12 at 4:13pm

The cable's are secure. We didn't think of trying another sata port so we are testing that now. +rep

We went ahead and tested numerous different sata ports but as we suspected it made no difference.

Well actually we just found out that we can consistently provoke a BSOD by running In-place large FFTs on Prime95. As for what conditions where BSOD have happened its really all over the place. Idle, listening to music, gaming. You name it it has happened during it.

And to answer your questions. We are going to swap the dvd sata cable with the HD to verify that the cable is not the issue. As for the ram, yes its 2 4GB stick and no we have not yet tried with one stick in different slots.

I'm also thinking that perhaps we should run some custom prime95 test to see if we can close in on what exactly causes the BSOD during large FFT's

Edit: If it seams like my posts are little vague or I'm just slow to answers I'ts because I'm not actually onsite with my friend and have to chat or call him for info
Edited by Bit_reaper - 1/18/12 at 11:41am

Thank you for your input. My friend is currently doing the ram stick rumba and I'm waiting for him to get back to me with the results.
Edited by Bit_reaper - 1/18/12 at 1:31pm

Update: So using 1 stick we have now tested all slot's and had no BSOD's. We have also tested the individual stick's in slot 1 and had no problems. All that now remains is to test different slot configurations. Perhaps the problem only occurs in dual channel mode? I guess we will see. Oh and the north-bridge temperature was broth up earlier. What would you consider to hot?

Update: So multi stick configuration seems to be a no go

Also a correction to the earlier info he does infact have 4x 2Gb ram sticks not 2x 4Gb as I earlier thought (makes more sense to as I don't know if they even make 4Gb ddr2 )
Edited by Bit_reaper - 1/18/12 at 1:59pm