I am trying to install Windows 7 on an HP DC7800 with a new 1TB drive. I have the system boot order set to CDROM first, and I have also tried the boot options (F9) key. Neither will let me boot from DVD to begin the install.
I see the DVD activity light on during the boot process but the install never starts and fails with an error saying non-system disk which I assume is because the hard drive is blank and the system is trying to use that after booting from DVD fails.
I have tried multiple bootable disks with the same result.