Go back into BIOS setup, Enable F12 Boot Menu, Save setting and exit. Then tap the F12 key at boot to trigger installer.
Hitachi is your SATA HD, correct?
Unplug all other HD's and periperhals.
Be sure to delete all partitions at Steps 7 and 8 of
Clean Install Windows 7 to create new ones as you please, or jsut click Next to let installer do it for you and begin.
Have your network driver in the backup so you can install it to get online if its not provided by the installer, then enable
Device Installation Settings and run all rounds of Important and Optional Updates to completion. If any drivers are still missing after all Updates are done then import them from the Suppport downloads webpage for the model.