i also have the same problem with my xbox. i have an x-lite chip, accidently deleted the dashboard and i guess the clock reset giving me that error 16 message. no boot cds or dvds are reading and flashing the bios is the only way i can think to fix this. when i try to flash it using a cd in the evox setup, it cannot read the cd as well.
sorry this isnt an answer for you but hopefully someone can help us both out