I have an nVidia GeForce Ti 4200 that is not overclocked. I bought it about 15 months ago. Everything looks fine when I'm in the normal Windows environment, but when i play games I get tons of artifacts, lines stretching across the screen, etc. It gets progressively worse as I continue with the game (no game in particular, does it with any game). Yesterday I formatted my drive and did a clean install. I installed all of the updates and installed Direct X 9 as well as the latest nVidia drivers. Still no good. Do you think my video card is going bad (even though it is fine in the 2D desktop), or are there any suggestions on how to prevent this? I can't play any games!! Thanks.