Hi skyedemon, welcome to the forums.
Firstly, have you set the BIOS to boot from the USB drive? The default is CD/DVD then HD.
Some BIOS systems don't allow the booting of certain USB hardware
Also, the missing files...would they be CD/DVD driver files? If so you need to disable IDE emulation for SATA within the BIOS as this has been known to cause installation issue in Vista & Seven, i know you said it installed in Vista but it might just work.
Hope this helps