Mac Pro 2008 no bootable media. No keyboard.

It doesn't matter if the disks are installed or not the same message keeps popping up. So I know the USB ports work, but it does not recognize the keyboard mouse power. I even tried the keyboard pc and nothing. No boot camp is installed either. It comes to 10.11 and 10.7 straight. Discs of OS X. each OS is on its own drive. No multiple partitions. Any help would be greatly appreciated.

Unplug all but one monitor, mouse, KB and power.

-Try resetting the SMC

MacIntel: Reset of the controller (SMC) system management

Have you tried the EB in total, recto and verso, USB ports?

Are you saying you get this with a 6.8 installation DVD into the optical drive?

Remove all except one HD sleds and try with only an inserted both sled. Try different sleds.

If you open the side door are any diagnostic light on?

Is the white fixed power light?

When did it last work?

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