I'm probably going to get them to back up all their stuff and wipe it clean.
You should back up their data first anyway. If they Don't have backup software already installed and you have problems installing backup software let me know.
If CTRL+ESC isn't responding, a viri or some malware has been messing with the registry. You can get to system restore and try to restore the system by.
Start the taskmanager, new task, browse to windows, click on explorer, click OK,
Explorer will start. Right click on computer, click on properties, click on system protection,click continue, click on system restore, pick a system restore before everything went bad. Reboot.
Let me know how you make out.
Edited by Magglass, 29 March 2009 - 10:30 PM.