Well I'll reinstall in a few days. Waiting for my new PSU to come in. We'll see for now if udpated flash solves the crashing. I mean i run my games fine. No problems what so ever. Just there are random crashes when using firefox. I switched over to chrome for today and it crashed once. White vertical lines and a grey background
Edit: Just crashed on youtube on chrome
... I'll reformat tommorow i guess. If anyone else has a 7850 and has crashes with flash then let me know if you fixed it. The crash is always a black screen lock up.
Edit: Confirmed that it is something to do with flash... Always happens when something flash related is on the page