Try resetting the motherboard... have the machine connected to the mains, but the mains power turned OFF (otherwise it's round yours for barbecued f^ckwit)... find the little button near the PRAM battery and hold it down for 1min. Put the mac back together and fire it up holding down apple-shift-P-R (to reset the PRAM).
Try resetting the motherboard... have the machine connected to the mains, but the mains power turned OFF (otherwise it's round yours for barbecued f^ckwit)... find the little button near the PRAM battery and hold it down for 1min. Put the mac back together and fire it up holding down apple-shift-P-R (to reset the PRAM).