[John Christie] “The clock battery **should** last longer than a year”
Technically it should, but I found sometimes if you turn off the battery back up at the end of the day, it tends to drain the clock battery much faster. Also, getting a cheap battery and replacing it is a good place to start rather than to have to haul the whole machine into a service center.
I’d try and change the clock battery first before jumping to the conclusion that the mother board’s a goner. Replacing the battery is cheap and easy.
When you unplugged the machine, did you hit the power button while it was unplugged? Keep hitting the button until the little blue light stops lighting up. This totally drains any power out of the PMU and sometimes does the trick as well.
Jeremy