My roommate just came down to me and asked why he couldn't logon to his Windows XP computer. At the logon screen there aren't any users available to logon to. The screen just has the welcome picture and nothing else. All 3 users were of the administrator account, so I thought maybe that account became disabled and for some reason didn't show up on the screen. I went to recovery console and was able to logon to the system admin account. Any ideas of what I can do. He said the only difference since it last worked was that the system forced him to run checkdisk. Any help would be greatly appreciated. Thanks.