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Can't Boot From DVD on HP DC7800

Last Modified: 2012-05-09
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.
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