Elite Sniper Corps

What would cause an almost 2 year old computer to suddenly not have video?  We tried a different monitor, checked to make sure all of the memory and shit is in its slots correctly. I can't believe an Nvidia card would go bad in only a year and a half, so, is there anything else to try before I buy a new card?  Thanks!  (Lemme know if you need additional info, too!)

put the video card in a different machine and test it.  Borrow a card to test your machine.  Verify you have power on the video card cords.