(formatting fix) It is an ASUS P7H57D-V EVO

I tested the boot media on another workstation (a Dell Optiplex 745) and it does not get the error.

I tried disconnecting the HDDs on both the ASUS P7H and the Optiplex, Optiplex will run fine in read-only mode but the P7H still gets the error.

It is also to go on two essentially identical P7H machines, which are both encountering the same error.

both machines are able to navigate the initial selection menus with either a usb or PS/2 keyboard with no problems. It is just the P7H that gets the error after I select the software installer

I tried removing the 'nousb2' string, the error still occurs, the only difference is it is displayed twice on 2 lines instead of just once, which is the similar to what happens when I tried disabling the USB controller in the BIOS.