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Windows 7: Faulty GPU or MB?

11 Jun 2014   #1

Windows 7 Ultimate x64
Faulty GPU or MB?

5 days ago while I was playing Skyrim, I noticed black dots on floor in one ruin. I thought it was a bug and carried on. 30 minutes later after loading screen for a second my screen was made of horizontal lines, mostly brownish color and a few green, pink lines. I immediately quit game, ran Firefox and when I attempted to load a video from YouTube my screen flashed for a second and the space where video player should be was black.

At that time I had Sapphire HD 5770 installed. I assumed that GPU was faulty so I removed it and installed Gainward 9600GT (it was the best of all the ones that I've got). And I installed a fresh Windows 7 Ultimate x64. It worked fine for 2-3 days but my computer was slower, a lot, and system showed my CPU speed to be 3.62, while before all that, it was 3.9GHZ (OC).

And two days ago while I was on YouTube listening to some songs, I got blue screen of death. I did not manage to see which error code was it, cause I panicked and just turned of my computer. And I couldn't restart it with BSOD nor turn it off with my power switch so I turned it off with my power supply on/off switch. Sooo...again I assumed my 'new' GPU is bad (it was loud, but not 'normal loud') so I removed it and installed some random GPU that I found, ATI Radeon HD 3600 series. This time I did not reinstall my system.

It's horrible, and my computer is still very slow, my OC got reseted cause I removed the battery after BSOD, and now it's back to 3.2. But, I still get problems, with this GPU for example Desktop Session Windows Manager stops working for no reason, and I have no Aero for a while, then it just starts working again. And I have this ugly problem (see picture below), which I've seen before with faulty GPU but how unlucky can I be to install THIRD bad GPU?!

And just a week ago I was planning on buying AMD Radeon R9 270x 2GB OC but now I am not sure if I should buy it or maybe change my MB or CPU, cause these problems confuse me.

Is there any program that tests the health of my MB and other components? I would appreciate if someone could help me or advise me of what to do next. I have to mention that where I live we often suffer power outage with no beforehand warning. Thanks in advance.

Attached Images
Faulty GPU or MB?-primer.png 
My System SpecsSystem Spec
11 Jun 2014   #2

Windows 7 Ultimate Edition (64-bit) Service Pack 1

Mostly when I have same sort of problems with my PC I run Hiren`s Boot CD when my computer starts up.
It has alot of test tools that can help you determine the problem, maybe try it out, see what you can uncover.
Hiren's Boot CD
My System SpecsSystem Spec

 Faulty GPU or MB?

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