My wife's laptop (Toshiba 4000 series) has decided to stop functioning. When the computer is switched on the 'Welcome to Toshiba' screen comes up and then a white cursor appears on the screen and that's it - nothing more. I upgraded to Win2000 a couple of months ago (from Win98SE) and it's never been the same since. It switches itself off if not used for some time and has to be completely rebooted (whereas before a move of the mouse would revive it). It may have something to do with the energy saver option. My wife set up a screen saver to try and stop the problem and that's about the point at which it started malfunctioning. She was told that the Hard Disk is locked but we don't know what to do about it. Anyone got any ideas?