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Frequent BSODs after changing Graphics Card
Hi, everyone. I've been trying to find a solution to my problem in other threads both here and on other forums, but it wasn't much of a help, so I decided to write something.
All the files requested in the instruction are attatched.
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Some background:
Everything was working just fine, but my video card (GeForce 520GT - I wouldn't buy it, but the numbers tricked me) seemed really weak for modern games, so I decided to change it.
I've chosen Radeon HD 6770 1GB GDDR5 from Sapphire as it's reasonably priced. Unfortunately my power supply was too weak (Tracer Be Cool 420W), so I bought Chieftec 500W.
My first mistake was that I didn't uninstalled all the drivers and nVidia stuff. When the crashes started happening, I did some searching and found out this might be the cause. I tried to uninstall it with DriverSweeper, but it didn't helped much, so I reinstalled the system.
When it also failed, I tried to use my on-board graphics Radeon HD 3000 and it worked.
Now I'm back with GeForce 520GT, which seems stable, but turns The Witcher 2 into a slideshow, so I would be glad if Radeon HD 6770 started working properly.
I'm thinking of taking it back to the shop. I bought it about a week ago. The rest of my PC was bought in September, except for the PSU that I bought a few days before the card. All the stuff is on warranty, so that's the good point in this story.
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I checked RAM with Windows tool - no errors.
I checked it with memtest for more or less 3 hours - no errors.
I checked the hard drive with CheckDisk and I think the test didn't finished because of BSOD. I'm not sure.
Help me, please. If you need some more info - just ask.
One more thing: BSODs happened when I was surfing the net, copying files, playing games, turning the PC on with USB plugged, installing drivers and other software. After I reinstalled Windows, the surfing, copying and USB connected ones are hopefully gone.
So, one more time: I need your help, please. And sorry for any mistakes I've made, as I'm not an English native-speaker.