Power Edge T610, Power Supply is working but control panel wont light up and I cant boot server?

Hi,

I have a t610 power edge server, after powering down the server and restarting it, the control panel stopped working. (nothing being displayed and the on/off power button doesn't respond either.

We then checked the power supply led health lights and they are on full green (no indication of a problem) the led light o the motherboard is also lighting up full green (no indication of a error)

I have tried plugging in an cross over Ethernet cable to the idac service port but the led lights do not turn on (not recognising or responding to the cable) when I plug the cable into my laptop it too doesn't recognise the cable and no led light turns on etc...

Please Help Urgently!