These are frustrating for sure. Never trust geek squad they don't know a dam thing about computers.
From what I gathered you had an nvidia video card thought it was bad and changed to an ATI card. Did you uninstall the nvidia drivers before installing the ATI card? Uninstall the nvidia drivers if they're still there.
After that here's what you do go into safe mode. Before windows boots and after the BIOS posts hit F8 and select "safe mode with networking".
While in safe mode launch some apps, do some stuff, and browse the web like normal. See if it crashes.
If it doesn't crash it's a software problem. If it still crashes it's a hardware problem. Let us know.
You said in another forum:
Edit: My computer froze again. One thing I noticed is when it does get a blue screen it freezes on the blue screen which is probably why it doesn't finish making a report.
It says
dumping physical memory to disk: 80 or 60
and stays at that number so I have to manually press restart.
so1dier :
Can someone please help me, I am having issues with a BSOD that I can't figure out. This is a link to the windows 7 forum where I have posted everything that has been going on.
BSOD Thread