Well I've tried installing several times, just got the PC back up and running the CPU heatsink fan died two days ago while I was using it
Luckily I just swapped out the fan and it booted right up, I figured I fried something but so far so good!
Hopefully the issue will be resolved by the time RTM is released! If everybody just keeps reporting the problem to MS, we have a better chance....maybe. I can't wait though so far from the experience I've had with 7 up to this point has been positive, I've got no qualms with getting rid of XP forever! It's getting dated and tiresome...
And I did do a BIOS update, to no resolve!