Solved Relatively new PC, BSOD in every start

[maraki]

Good evening from Greece. My PC is not exactly what you would describe as new, but I installed win7 x64 last week because I bought 4GB of RAM, and my winx32 wouldn't be able to recognize them. The first few days everything goes as planned. But since this morning, I keep having random blue screens. I know my way around a pc, either hardware or software, but I'm not a programmer, and I've run out of ideas. I would appreciate any help.
I have attached my minidump file as requested in the rules..

 

[Arc]

[COLOR=Red]BugCheck 3B[/COLOR], {c000001d, fffff80002d722a0, fffff880024498d0, 0}
[COLOR=Red]
Probably caused by : hardware[/COLOR] ( nt!RtlpCopyAces+1f0 )

Followup: MachineOwner
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So apparently it is a hardware related issue.

Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest for at least 8 passes, preferably overnight.

If it start showing errors/red lines, stop testing. A single error is enough to determine that something is going bad there.

Stress test the Graphics Card using Furmark.
Video Card - Stress Test with Furmark

Stress test the CPU.
Hardware - Stress Test With Prime95

Let us know the results.

 

[maraki]

Hello again.

I run everything you advised me to. Results are put on attachments.

Memtest found nothing after 8 passes, I even left it one more day and nothing after 17 passes.
I have only had one more BSOD after I posted here. Yet, because of memtest I haven't used the pc for 3 days straight. If anyone has any other ideas, feel free to help

 

[maraki]

Well I managed to see the error that popped in blue screen; it was 0x00003b which was solved by a microsoft hotfix, it was a graphics... something.
Thank you for your time, I really appreciate it