The Sims

[Buzzlightyear]

There isnt much info given from you that may suggest the cause, i mean has anyone been on your computer, or has there been any software installed or removed when u had the Sims installed, shared files may have been acidentally deleted or something.

Try installing the game on another computer, on a friends computer or something, test to see if it works on theirs, if it does then there is something wrong with your pc, obviously buzz, still if u r having problems then take the games back and ask for your money back or exchanged it for another game.