I have a macbook pro (early 2011) that when not plugged in and i press the power button to switch on, i can hear the machine running for about 2-3 sec, and then shuts off again. Sometimes, it won't switch on at all unless plugged in with the power chord. If the power chord is in it boots as as per norm...
I also noticed that my Macbook switches off randomly when i move/transport it, and usually then it only turns on properly when plugged in. Does this sound like battery failure or possibly a loose contact somewhere? Perhaps even Logic Board (really hope not)?
I doubt its a software issue although I have installed bootcamp and played a few games here and there that might have caused the machine to become quite hot. This might have affected my battery/cpu/logic board or whichever i'm guessing?
Has anybody experienced this before or have any advice on this?