Dead Battery , no power when plugged in
I have a 2009 Mac Book Pro that was working fine , although I had been advised the battery was not in good shape. Now won't recharge and will not power up although is plugged in. I am wondering if a new battery will fix or if I should check for other problem. I use it as secondary device.
Is it time to retire it ? I note a battery is not all that much , but hate to buy it if it won't solve the problem.
MacBook Pro 15″, 10.10