Apologies first - I was given my first mac today, for free, and I don't have much history on it. It's a PowerMac G4 and the woman who gave it to me told me it needed a new hard drive. So I put in a new hard drive a coworker had, erased/formatted it, and am using the restore disc I received with it. One of two things keeps happening: 1. the computer shuts down randomly or 2. I get an installation error. I've been doing a lot of searching and the only thing I can seem to come up with is maybe something with the RAM. Or maybe I skipped some crucial step before installation? Any help is appreciated!