Hey guys, I have been using HD4870 which worked perfectly, but yesterday I bought a HD5850 from a friend (who was using it just for few months) and suddenly I am seeing few glitches on my screen. Here's a screen shot which explains it better:. I tested it whole night yesterday, even in game, and this problem showed only 20mins back. What could be the issue? And since this problem is only 20mins old, I have only experienced it on websites (and not on my local computer browser) on both IE and firefox. I am already on the latest ATI drivers. My system config: Q6600 IP35 Pro HD5850 1 GB 2 x 2 GB RAM WIndows XP X64 Please help me TIA!