Greetings to you all. My problems started about 2 weeks ago.Suddenly one day while browsing the net some white lines appeared on my monitor[more like small white squares very close to each other]..i rebooted and it went away. After a few days the same thing happened again plus a a system lock.After another reboot and maybe 1-2 days later my pc froze while gaming. I decided to open my pc and use my dust blower , since i havent done that in more than 4 months. Everything was ok, i was gaming and browsing the net fine for about a week until the same thing is happening now on a daily basis.It has no pattern i can recognise , it can happen while browsing or gaming.I have tried 2 different driver versions and after i saw no result i formated and reinstalled my vista x64 OS. The system takes around 4 min to boot now[ used to be 1minmaybe even less] and most of the times it doesnt even boot.I get a black screen and once i noticed a blue screen windows error report saying something about attempting to initiate display drivers etc etc[even that blue screen had the white artifacts] I have unplugged and plugged back in my gfx card and cleaned it carefully but it hasnt helped. All i can think of is that its a gfx card issue and that i probably need a new card..any other suggestions/solutions would be much apreciated Thank you in advance P.S:the same thing happened even in safe mode, no lock ups but the white lines/artifacts[but only once] ..maybe it could be my mobo?