Hey Acill,
I might be wrong, be from the serial log I don't it recognizing your HD. Do you have any installed?
If not, do you have the boot CD in the dvd drive?
If that doesn't work, when you tried with the boot USB, you selected to "Boot from mass storage" at the boot menu, right? Did you connect the USB at the first USB port, at the back, top in the row, closer to the back of the tower?
Keep on using the serial connection because it will help you with messages.
