i have a late 2008 macbook and recently bought an Aftermarket charger, had one before for a year with no problems with i dropped it and it broke. anyways lately with the charger hooked up, if i removed the charger the computer would turn off and when i would click the button on the side to check the battery, all would flash at the same time. what would fix the problem is the battery pull and hold the power button for 5 sec but later in the day it would do it again. its done it a couple times now. my battery is depleted as well, shows replace now so not sure if that has anything to do with it.