Yes, it does seem like a hardware issue. I suggest that you run Memtest86 from a cold boot after your computer has been off for a while. Run it for at least 7 passes. This will take 6-8 hours. Follow the instructions in this tutorial: RAM - Test with Memtest86+
Seems like computer is still crashing even without any programs installed and SFC don't find any problems.. Going to run Memtest86+ tomorrow (hope it can test 8gb of RAM) and post back results when done.
Okay, I left Memtest86+ running for 6 hours and it seems to have found pretty many problems.. I have no clue how to read those error outputs but seems like errors are between 2gb and 4gb. Guess I just have to start going thru memory sticks 1-by-1 like in RAM - Test with Memtest86+ and see if I can identify bad sticks and then go to shop..
95% of all persistent bugchecks here come down to
1) bad drivers. Only use signed drivers that have passed Microsoft Windows Hardware Compatibility Labs Logo certification. Not only will you get better quality but the driver software has to implement the latest features for the OS it's written for.
2) bad memory. Nobody ever believes this at first. When removing the offending DIMM also removes the bugcheck they usually come around.
3) third party anti-malware and *ahem* "utilities". Nobody knows Windows better than Microsoft. Be suspect of anyone who tells you otherwise. Sure there are exceptions, like Marc Russinovich who started Winternals before Microsoft bought them.
4) malware. It shouldn't surprise you that software whose only aim is to do evil things might not be written with the greatest attention to quality. Techniques such as rootkit injection, polymorphism and obfuscation might cloak this malware so well as to evade detection by even the best scanners but, when it crashes, it gives itself away.
Tested each individual RAM stick with every of them passing (1 hour testing, 3 passes) and then started reading motherboard manual..
It says that my motherboard (P7H55-M PRO without integrated GPU) doesn't support more than 2 sticks of RAM type I have (CORSAIR CM3X2048-1333C9DHX ver3.3), 4 sticks are only supported with same model but with integrated GPU.
My motherboard seems to support "CORSAIR CM3X1024-1333C9 ver1.1" with 2x1gb sticks. And that manual also says my motherboard won't support any combinations with 4 sticks (why is there even 4 slots then..)
What should I do in this case?
Oh, and I cannot test each slot because computer only boots when I have 1 stick in A1 or 2 sticks in A1 and B1 or 4 sticks in all slots.
Ran Memtest86+ with 4 sticks again with no errors.. Seems like problems come only after computer has been powered down for more than 2 hours..?
A cold boot puts more stress on the RAM. You need to run at least 7 passes when testing; 3 is not enough. Some experts recommend 12 or more passes.
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