ROM battery seems dead (date / time lost at every boot)
the date and time are lost every trime I start the machine.
looks like the ROM (or PRAM) battery is dead:
is it possible to replace it? nd how?
46395
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Your machine does not have a PRAM battery. It uses a small capacitor on the logic board that should last for 10-20 seconds while changing the main battery. Your main 47Wh Lithium Ion may need to be replaced. If it has a charge, reset the PRAM by starting up and holding down the Command - Option - P & R keys and wait till you hear it tone three times.
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