ok i have been on these forums for a week and i see that HALF of the people with problems is that they don't try every driver. I'm not saying that try them all but try more then one because it's not a one driver is the same as others, each driver is different, fool around with it abit, and if it doesn't work right then, then come consult us, i'm not trying to be mean, i'm trying to solve heaps of peoples problems in one go
and make sure you have the latest drivers for your video card. the same goes for sound and input.