Michael got an old, cheap, used computer and the computer just keeps rebooting to the BIOS. Leo says to make sure the IDE cables from the hard drives are properly connected on both ends, and make sure the drive is set to the master drive. The lithium BIOS battery is likely dead as well, so he should replace that. Then, reset the BIOS hardware configuration setting, because it's obviously changed.
If this doesn't fix it, the hard drive may be pulling too much power from the power supply. The chatroom also says to make sure the jumpers on the motherboard are properly set. Leo says that the RAM may be loose, and while Michael is at it, he may want to get more RAM. Could he get restore discs for it? Leo says that Michael could get restore discs for about $10 from HP or Microsoft, but Linux may be a good option instead. He should take a look at Puppy Linux and XUbuntu. He can learn how to do it from episode 5 of Know How..