Hey guys, So I have a Macbook 1.1 running OSX 10.5.8 and recently I haven't been able to run my laptop without it being plugged into the wall. The battery charges while it's plugged in, and still reads as charged when it's unplugged, but as soon as the charger is unplugged my computer shuts off. When I try to start it again, everything spins up for a second or two and then cuts off again. Sometimes the fan spins up real loud, sometimes not. Any suggestions before I give up and just try to bring it into the store?