laksmialiyya Please test a new save, for comparison's sake.
If the new save is fine, try moving the sims in your main save to a different lot. You don't need to save your progress; this is just for testing.
If the new save is affected, 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.