IF 5.0.5 is on the HD and version 7.0.4 is on the CD and you show 5.0.4
running you booted from the HD. Reach in the PC and drop the power to the HD
and try again to verify where you are booting from. If you don't boot then your
ISO image is faulty. And, what has been happening is that you are blowing by
the CD in the boot process. Let me know.