BSOD with 2 Ram sticks

Snortan

Honorable
Apr 29, 2012
7
0
10,520
I'm trying to revive this old pc and I'm stuck with these BSOD's. It used to work fine and haven't changed any hardware, only got new ram because 1 stick died.
PC Specs:
MSI P43 Neo-F
Q9550
2x2GB Generic Ram DDR2 800
640GB WD HDD
MSI GTX 460 1GB
Vantec Ion2 450W
Windows 7 x64 SP1(fresh install)
The PC runs just fine with just one stick of ram. When I add the second I can get into Windows with no problems and if I just leave it idle it most likely won't BSOD but sometimes it will do. What I found to crash it almost instantly is to install something (in this case it was nVidia driver, tried something else too) and it would crash or sometimes lock without a minidump even before it starts installing the files, like it would lock when it's unzipping the installer or checking requirements.
Also it will crash if I copy a large file from one location to another.
Same exact thing happens in safe mode.

Weirdly enough it will not crash if I put the system under stress. I've tried stress testing using Aida64, Prime 95, ROG RealBench for about 6 hours each and played Far Cry 2 for about an hour. This with both ram sticks installed. Temps remain in normal bounds, under 80.

What I've tried so far:

  • ■checked the ram sticks separately using memtest for 6 hours each and then together without errors
    ■no overcloking and all bios settings set to AUTO, also tried increasing the volts a bit over default
    ■sfc /scannow says everything is fine
    ■tried 2x1GB DDR2 800 ram sticks and same story, 1 stick is fine, 2 is trouble
    ■updated all drivers/chipset/bios and windows updates
    ■there are no obvious blown caps on the motherboard
Anything else I could try? I'm going to check the HDD for bad sectors tomorrow and see what that says.
Could the CPU be making this issue? I think I might still have an e8400 somewhere but need to get some thermal paste too.

I've put the minidumps on my drive if someone wouldn't mind having a look. In 2-3 minidumps Driver Verifier was enabled.
https://drive.google.com/file/d/0B7SLwMgjrg3KbDNZNXBPMGczWnM/view?usp=sharing
 
Tried leaving the ram settings on auto, also tried putting their manual timers 5-5-5-13 1.8V.
Scanned the HDD with chdks and it says 0 errors/bad sectors.
They only thing that I can think of that still remains "untested" is the PSU and the motherboard(don't have a spare for either). But I imagine the PSU is fine since under stress test everything works just fine.
So that leaves the motherboard being faulty with the ram slots?