Nicolio21 Does this happen if your sims are on a different lot? What about if you test with a different, previously unplayed household in the same save, or new sims in a new save? You don't need to save your progress; this is just for testing.
If the new save is affected too, please provide a dxdiag. Click 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.