Lot of questions, some I have answers for and some I will later after the next round of troubleshooting. (initiative levels running dangerously low, can't bring myself to mess with it today =x)
Is the ROM on SATA, heck is the HD on SATA?
Every cdrom drive and hdd i've tried so far has been IDE. I found a rockethead adapter today (plugs in the back of an ide device and lets you use a sata cable instead) that I mean to try with the hard drives. I have some sata drives but I need a working BSD system to empty them because they have important stuff on them, so they're effectively non-existent until I can get that done.
Can't use the adapter with a cd-rom drive because from what I've read, ATAPI and SATA do not work together, but I can use it on an ide hdd assuming it works. This would remove the hard drive from the ide channel.
Do have access to and know how to use a DMM?
My reasoning is it might have low rails. Hey got to rule it out..
This power supply was running an AthlonXP 3400 with 3 harddrives and a 7900gt just fine 3 days ago. Switching power supply.
What rev BIOS are you using, and did you flash it, or did it come flashed for you.
Revision 1901, and while there are newer revisions out there, I haven't seen anything while googling to point to this as a problem.
I may head to Worst Buy later to pick up a 5.25 usb ide enclosure and see if putting a cdrom into it helps. I will also look to see if they have a usb sata enclosure that isn't too expensive. Money is tight right now, but if I can get either it will help.