could be the hdd. can't you replace it or test it on another pc?
Its nothing to do with the HDD I believe. As I can't even reach the setup screen to select it to install to the HDD. The HDD is visible and registered as working in the bios, and I can boot to it. (Not that does anything since its empty.)
pull the gpu see if pc work fine with onboard video. if errors out try swapping ram sticks. if it gets stable wipe all partion from new hard drive and reinstall them.
Could the GPU even affect a USB's ability to boot a windows installation disc? The hard drive is clean and empty. Its brand new.