I have HP dv7-6001st laptop. It comes with Ati Radeon 6770 M HD video card. I assume freeze is because of video card.
I changed from normal hard drive to ssd drive and issue still continues. Also I have switchable grapics. When I change to Intel grapichs it doesn't freeze anywhere but when I change to ATI card(high performance card!) it freezes. When I am in the game it doesn't freeze but it freezes when I play videos, surfing the web or just clicking a folder to open it. Only screen freezes, background process continues at the time of the freeze.
How can i solve this issue? It happens from time to time. Sometimes it happens sometimes doesn't. My card isn't overcloked or doesn't have heat issue. Is this issue common with 67xx series?