I have a problem with the 6800 GT video card that I bought from Newegg a few days ago. It would be great if someone here could help. My computer speccs are the following: 350W power supply P4 2.8 ghz 1 gig ram 9800 pro ATI video card <=== old card MSI motherboard The new card is a WinFast A400 GT TDH GeFore 6800 GT 256 MB DDR3. I had a 9800 pro video card before, so I uninstalled all the 9800 pro drivers first, removed the card, installed the new Leadtek 6800 GT card. When I first booted up the PC, I saw strange different colored dots (artifacts) on the screen (on the windows loading screen). When I opened the BIOS setup, I saw strange artifacts on the blue screen as well (but everything was visible enough to make adjustments - aperture size change to 256 MB for the new card. Then, when windows loaded, I saw artifacts of other colors on the screen. I installed the Nvidia drivers from the CD first, then updated them from the official site. When I rebooted the computer, it froze and no signal was going to the monitor - it went blank right after the windows loading screen. I repeated it several times and the screen never went back to normal. I readjusted the cables to make sure everything is put in correctly, repositioned the card. Then I reinstalled windows, saw artifacts again on screen (even in BIOS mode), installed new drivers again. On reboot computer froze. When I put my old radeon 9800 pro card in, windows booted again. I am not sure what the problem is and whether it is with the video card itself, with the motherboard compatibility or with the power supply giving enough power. How can artifacts appear in BIOS mode? Can someone please help?