I'm having this weird problem and i think my video card or its driver maybe the cause, my card is an HD 5670 It works fine running games but since the last week it's been giving me some trouble.
My PC won't restart it hangs on the shutting down screen, I have to reset it manually, Sometimes I can't open some programs like EA Origin, the little circle that tells you to wait appears and the program won't open, when I try to install a program the installations won't progress and I can't use windows aero, etc.
This could sound like an OS problem but I have reformated my PC and just as soon as i install the drivers for my video card, the problems begin, I have also updated the bios, also when I switch to the integrated graphics chip of my motherboard the problems are not present.
I have also tried to use the latest beta driver and the problem persists.
Gigbyte 880GM-D2H Motherboard.
AMD FX 6100 Black Edition 3.3 ghz
Windows 7 ultimate
8 Gb RAM
Radeon HD 5670
Thanks in advance, hope you could help me.