Vista Tutorial - Flawless Installation...yet system hangs attempting to boot 1st ti

I'll start out with saying I'm good with computers and I've been able to
figure out my problems. This one has got me though. I've had zero problems
installing Vista Beta/RC1 on my older machine. It's just on my current
machine that I'm having problems. My current machine is a AMD X2-4800+, Asus
A8N32-Sli, 2GB OCZ, 1 PCI-E Geforce 7900GTX 512MB, Xi-Fi Sound, Raptor X and
Raptor 74GB, Plextor DVD.

I'm installing Vista RC1 on an empty Raptor X. I start installing Vista RC1
from the Dvd in XP. When complete, the system reboots, and gets to the boot
select screen. Vista is selected and then immediately after, I get a black
screen. The system just hangs right there. No HDD activity. I ran the
Vista startup repair utility but it finds no problems. I've run the Vista
compatability check and the only thing it doesn't find information about is
the Nvidia nForce Networking Controller. * I don't even use this, I use
Marvell Yukon Gigabit Ethernet for internet *

This can't be the culprit because I disabled it in the bios to be sure, and
still can't boot any further.

I've looked on all the troubles already posted on boot hangs and I seem to
be the only one hanging after the boot select. If anyone has any ideas or
suggestions please drop a line. Also, if you need more info on my setup I
can post that too.

Thanks.