man... the blind lead the blind, eh?
it is possible the matrix got your box. It's also possible you've got a bad hard drive cable, loose screws on the motherboard, a cockroach under the board, or any one of a hundred other reasons for a frag...
worst case you need a board, not a whole xbox - get on ebay - they're $50 , and there's lots of them - and don't go into the "oh god" thing - put your old board on there as "fried" and someone will buy it, and probably pay almost all of your money back. don't know why, but after selling a couple of new boards on there, I found people were willing to pay almost as much for fried stuff - I don't understand it, but that's what happens, and you might as well take advantage of it... people are buying *locked* hard discs there for $10, with $10 shipping - wtf?! I guess one mans trash is another man's paperweight...

oh yeah, if the matrix erased your tsop all by itself, with the write-enable jumpers unsoldered, send it to me, and I'll eat it with some fava beans.... and a nice chianti
