My ATI 9700 AIW video card has started to fill the screen with artifacts. The artifacts are on the splash screen, windows XP logon screen and after WinXP has loaded. Sometimes are worse than others, occasionally though less frequently now the screen is almost clear. So far I've cleaned the fans and heatsinks (all temps were normal), verified connections are tight. The diplay can be affected by moving the video connector at the card up and down, making me think this is a hardware problem. The only odd thing is the bios info screen does not pause as long as it used to even though no changes have been made to settings. All virus scans normal. Do I need a new video card?