Blarg, is it a
SATA DVD burner? Try it on the other controller, might be that. I have a Samsung
DVD burner and sometimes the board will refuse to
post with that connected.
Also, if you have any
USB drives hooked up, try unhooking them and see if that fixes anything - the T3eH8 has a known problem with AHCI enabled + external
USB drives and some optical drives. There's a beta
BIOS to fix this currently, but the final one shouldn't be too long.