What is causing artifacts?

jan606

Honorable
Sep 30, 2013
4
0
10,510
nah it's happening all the time. I had win 7 and i tought that was the problem, now i switched to win 8.1 and i have the same problem.. tho it started happening not long after i got new graphic card: radeon 5850 HD.. it has custom cooling vent.. and it's happening in some games and not others.. and it's happening in windows.. and sometimes when i try to Prt Scr the artifact the picture doesn't capture the artifacts.. and than sometimes it does.. even tho they are there when i Prt Scr.. Thanks for helping me out :)

example: http://shrani.si/f/3Y/ae/3RHWwfhX/untitled.png