These are the points for the following question. Let me know if I did this wrong so it can be corrected:
I recently upgraded to Win98SE from Win98. I find that whenever I leave my computer on for a long time, the screen will go blank and the computer freezes completely. My only option is to turn off power and then turn it back on. Ctrl-Alt-Del doesn't work. I've never been in the room when it happens. My screensaver seems to be working and I've changed it to see if that's the problem.