i recently got a leadtek 6600gt as an upgrade from a 5200. i installed card correctly(driver cleaner,latests drivers, etc) but computer isnt acting right. when i access card settings from advanced tab in display properties it locks up when i try to exit out and i get rundll error. also when playing world of warcraft with very conservative settings(12x7 medium terrain distance) i frequently get fps drops down to 1 fps where im unable to do anything but log out and restart game. at first i thought it was a bad card so i tried it in another computer and it was fine. i rma'd it anyways to newegg and got a replacement and its doing the exact same thing. also when i try to run 3dmark i get artifacting on 2nd test and it crashes with out of video memory error. im stumped and was hoping someone could help me out. everything is perfectly fine when i reinstall 5200. what gives?
intel p4 2.8 ghz
2 GB corsair ram
intel p4 2.8 ghz
2 GB corsair ram