Thank you for your suggestion. We have tried this on a few of the machines with the issue and it has not fixed the problem. As others have stated, this affected all users the same day. A message appeared about screen blanking and once the message was cleared, the backgrounds/wallpaper went black and the fonts changed. We are aslo noticing that the curser position is not correct either. It does seem to affect certain programs but not otheres. For instance, our POS software looks fine, but Outlook and Excel (and the text box i'm typing inot now) look horrible.