Where did you get Windows 7? Did you burn the DVD yourself?
Besides wiping the HD with Clean command, reset BIOS setup to defaults, while there set SATA controller to AHCI to try install.
If these fail, try entering Device Manager during install to uninstall any Devices showing in error (!), likely the Display driver
to allow installaiton to complete, then update drivers
from desktop. Device Manager - Access During Windows 7 Installation