I took out the old drive and put in a new one. I probably should of put the 6950 in there before loading windows on the new drive. Instead, I left the 8800 GT in there. Windows installed successfully, but when I powered down and installed the new card and turned the pc back on, that's when it got stuck on the screen that says Gateway Computer....Press F2 for Bios or F10 for Bios Boot. It just stays there. When it boots up normally, it goes to that screen for a couple of seconds and then launches into windows.