Ask Jacob
Home » Resources » Ask Jacob » G4 PowerBook won’t start up.
G4 PowerBook won’t start up.
Monday, September 10, 2007 / Hardware, Intel Macs
My old G4 PowerBook laptop has not been used for over a year, I plugged it in but it won’t start, no sounds, no picture on screen, no lights. Will a dead battery cause this problem?
Most Mac laptops have two batteries. One is the big removable battery but there is a second, smaller battery inside. Both batteries are rechargeable and replaceable. If both are completely drained, then you will experience boot-up problems. The best fix is to reset the power management unit (PMU), turn it on, and let it charge for 24 hours, uninterrupted. Below is a link to the PMU reset procedures for most G4 PowerBooks.
