I have RC2 installed. I had no problems with it.
A few questions to try out:
Are you over clocking anything?
Did you try removing the DVD before the first reboot, then awaiting a prompt to reinsert it?
Do you have the latest firmware for your bios?
Are you trying to install the 64bit version on a 32bit machine?
There are a few brainstormed ideas, it's the best I can do given my install of it was completely painless.
You could even try just the RC1 version of it. I've heard a few complaints of RC2 being a bit of a pain in the butt for people who had no problems with RC1.