I built my pc in Jan. to play Everquest2 and Oblivion, but when I get on the game, it freezes, and there is a high pitch noise in my speakers. Mobo P4S800D-X 3.2 P4 2G RAM Chaintech Geforce 6600 GT 128m soundblaster audigy 2 Rosewill 550W PSU lite-on dvd player dvd-r 80G western Digital SATA HD 3 case fans I have tried a number of things to fix it, I have ran memtest86, removed sound card to see if that was the problem, unplugged numerous things to see if it was a power issue (I had bought the 550W to upgrade a 450W psu thinking that was the issue, I was sadly wrong), heat isnt an issue, my cpu runs at 41C on average, Mobo runs at 30C on avg. I have updated my bios, my vid card drivers, soundcard drivers, swapped the ram sticks with each other, I have tried a different video card and it locks up too. I have tried running 3Dmark, but after it loads up nothing else comes to the screen, just a black screen. Are there any older drivers that would work better than the new ones? I have also updated my agp drivers for the motherboard. Help needed, I'm at the end of my rope.