im having problems,
when i leave my laptop on over night when i go to it in the morning it has restarted and says that winlogon.exe crashed, normaly in the early morning. any ideas what might be causing this?
cheers

Check your event viewer (right click on My Computer, select manage and event viewer) for the error. You should find it in the Applications Log, if not check the System Log. When you double-click on the error there will be an Event ID associated with it, that is a good starting point to troubleshooting the problem.