Yeah, once I get as detailed an error code as possible I'm going to get on the phone and see what they'll quote me (I have confirmed the CPU temp sensor error with the fast hardware test, running a detailed test now). It sounds like you got something like the flat-rate depot repair they'll sometimes offer. Which sounds amazing, and under $400. BUT this computer is very old (model released 7 years ago, purchased over 6.5 years ago), and I've seen some posts on the web suggesting they might not offer this for computers over about five years old. So we'll see. It's so old, I kind of want a new computer anyway, it's just the price tag I find a little hard to swallow.