I think I may have fixed the computer

I decided to go ahead and get a new power supply, since it was only $30. Installation went pretty well although I apparently knocked the hard drive connexion loose and had to tighten that up, and I sliced my finger open trying to pull out the connexion for the floppy drive. So, maybe with a little offering of blood, the automatic shutdowns will stop. I'm going to do some TV work (the video outlining) and if the computer stays on the whole time, I'll be very, very happy. Wish me luck.