yea the original bios on the microsoft chip is currupted
when you install a mod chip it overrides the old microsoft bios.
it's the only way to fix it.
even if you install a temporary chip to reflash the orig M$ bios it wont flash.
I have a SmartXX Version 2 chip in my main xbox.
most people like the Xecuter chip.
the only chip that I know of that wont fix this problem is the Duo.
so grab a chip and bring your xbox back to life.

BOOST