I got my comp about a year ago, installed this and played through the single player once. When I tried to get online to play, I found that I had my HUD, could see chat and the running toll of who was killing who, and my aiming reticle--everything else i.e. the actual map was just a gray screen. I could still hear sound and move and die....a lot, but I couldn't see where I was moving.
I decided to uninstall and reinstall. When I went to re-install, the little mini-menu that pops up when u put the cd in said "uninstall" where "install" was supposed to be--the computer thought the game was still installed. I selected the uninstall again, nothing happened...now whenever I put my cd in windows says "this game has known compatibility issues" I hit continue and the uninstall option is still there. The game does not appear in the installed programs section of the control panel, so I think it's just an issue w/ the game itself. When I select "play single player" on the mini menu--it closes the menu and it seems like it's loading the game, but nothing actually opens.