Hi All,

My son's trusty Powerbook 540c has recently started to shut down at random while in use. After this happens it will not restart unless I unplug the power adapter and replug it. It then sometimess starts properly and at other times will shutdown again during the startup process. Both battery packs are dead but it was working fine off the adapter.... any chance of a simple solution? Could it be the adapter or is it more likely to be the power management/motherboard?

Thanks

Deb