I ran Mersenne Prime Test from Ultimate Boot CD last night for 8 hours, I don't think it picked up any errors (as it was still running when I woke up).
I have ruled out:
1. HDD; I unplugged it and tried to boot, same problem.
2. GFX; Ran onboard and same problem.
3. RAM; Ran Memtest for 12 hours, no errors.
4. CPU; Ran Mersenne Prime Test for 8 hours, no errors.
5. OPTICAL; Purchased a brand new retail sata drive, same problem.
I doubt its the PSU.
When I turned the motherboard on for the first time today, I change the boot order to 1st CD-ROM and 2nd HDD. No other changes.
I then changed the SATA interface (or whatever it is) from IDE to ACHI, still didn't work. Loaded "Fail-Safe" option, still didn't work.
I just don't understand, the motherboard picks up the HDD and DVD-ROM, yet it refuses to install windows. Sigh.
The only thing I can think of is that its something to do with the multiplier or voltage, something like that.