mpc5200lite usb

i am working with the mpc5200lite evalboard and I have installed the usb
drivers and with the command ‘usb’ I can see my mouse. Unfortunately this is
only working for one of three boards. The other boards are not responding to
the usb request and the power led for the usb connector is off.
Is it possible that this could be the result of a false bestcomm
initialisation? or is it probably a hardware failure?