when i reboot, i only have 2 options: 1. fixed problem caused last time, 2. reboot normally.
if i choose option 1, after ran a while it displayed login screen and i can't log in using any user. option 2, ran little bit then went to sleep mode.
so i can't do safe mode at all
Then you need to repair-install from Windows CD.
What was option 1 ? There was not an Administrator logon ?