thanks Clifface. We appreciate your responses that have nothing to do with the problem.

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The chip was NOT soldered to the motherboard. Solder was added to the motherboard.
Obviously, yours installed in 5 minutes..CUZ IT WORKED.....MINE DIDN'T. By all the people posting the same issue, I would think that you would pick up on the fact that ALL shipped Matrix chips DO NOT WORK.
I used PROVEN bios, I installed them repeatedly. It programmed perfectly. The chips do not work consistently. That is the issue.
If your Matrix installed well, I'm happy for ya. Mine and many other's DID NOT even though we followed directions and went overboard trying to get them to work.
Don't Diss my posts just because you don't bother to read them. Worship Easybuy on another thread and leave this one for possible solutions to my problem.
Does anyone else think a lpc modchip would help? The Xbox is currently flashing yellow as soon as I turn it on. I am guessing this is implying a short/voltage problem instead of bios.