Marina_Pearl79 If you have a Sims 3 folder in Documents > Electronic Arts, please move or rename it and try again to play. This will remove, but not delete, your saves and other user data. Let me know whether this helps, and we can go from there.
If you still can't play, please provide a dxdiag. Hit Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop. From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.
