Vista install from DVD hangs on green loading progress bar

"I called HP and they recommend wiping the disk using DelDisk then retry the recovery disks. I have not tried this yet but think it probably wont work because I tried a brand new clean hard disk. I will report back shortly.

EDIT: The problem was the motherboard and CPU. Replaced both and all was fine."

"It might also be worth inspecting the install disc for dirt.

I would replace both SATA cables (optical drive and hard drive), or at least unseat them and reseat them if you don't have spares."