Recently one of our employees quit work unexpectedly.His computer was switched off but when I turned it on I couldn't log in. The logon window username, password and domain fields are all greyed out. This has never happened to me before.Has it been sabotaged? It is an XP SP2 computer connected to aworkgroup on a local network. It there any way short of reinstalling XP that I can get into it to allow users to login to the computer again?

You can boot up from XP CD and re-install another copy of Windows on the hard disk. Your user will be able to logon to new copy of the Windows.

Yeah we fixed it. The solution was topull out the the network fly lead and restart the computer. Once the computer had logged in locally we replaced the network flylead and it logged in fine. Apparently one of our users had tried to log on to the computer which is in a workgroup notadomain with an active directorydomain account which had been disabled. It came up saying "the user couldn't log on as the user no longer existed" (sic). Then the user tried logging in locally with her own domain account (we run Citrix) and then it greyed out the logon window.