I did a virus scan and had two rundll errors showing at log in start up page. everything seemed to work ok but the rundll error message kept coming up. the rundlls referred to were bogus.... I did a system restore to try and eliminate those error messages. that did not help. A second system restore now leaves me with no log in screen coming up. goes from windowsxp to grey. I am still able to get to safe mode ok. also, all system restore points are now gone.