Wont boot

[gibs]

Hi all,

I would really appreciate some additional help on this, my xbox has been dead for a month now and Im running out of ideas. Ill even pay someone that helps or gives advice that fixes it - Im desperate!!!

Background:
Xbox modded using Matrix, flash went wrong, wont boot now.

Problem:
Error 16 on boot

Attempts:
Re-Flashed Matrix with Evox M7 Bios, and another with Evox D6 Bios
Changed IDE Cable
Changed DVD-ROM Drive
Tried new hard-drive install
Burned Slayer 2.5 to several types of media, including CDR, CDRW, DVDR, DVDRW
Downloaded Slayer 2.5 twice in case of download problems

Still out of action!!! Has anyone else any ideas on possible solutions at all please? As I say Ive tried everything but will
do anything to get it working! Please help.....