Dell Optiplex 320 and USB keyboard/Mouse

Hi I am having problems imaging these machines using either the PXE or boot media options.

I boot and get the optons for image creator or deploy agent and I choose image creator.

Then I get some errors which I cant remember off the top of my head but will add them if its needed.

Then I get the question about changing settings manually or wait 5 seconds and the mouse and keyboard are dead.

I have tried adding the nousb2 and the acpi=off noapic

With the nousb2 option I get dropped out to shell and the acpi=off option stops anything happening at all.

Any Help would be greatly apprecitated on this one.