Chosen Solution
Hi there, Last June I got the motherboard of my MBP 15" Late 2011 replaced because it had a faulty graphics card. Now I’m getting random crashes, when the MacBook is not connected to the power. After it crashes it won’t turn on, I have to do this trick with opening the lid, connecting/disconnecting the power cord and pressing the power button. IF it turns on, the time and date are reset. First I tried to usual (SMC Reset, HDD check, etc.) and this did not solve my problem. After acknowledging that my battery was running out very quickly, I decided to replace it. After replacing the battery, it worked for a while when disconnected. But now it starts crashing again, mostly directly after disconnecting the power plug. Any help would be appreciated.
The MBP 15" Late 2011 is plagued with issues like this. I highly recommend you go back to Apple and have them replace your logic board. The logicboard has lost its ability to connect the power it receives from the magsafe to power the battery properly. Usually this means bad battery or LB failure but since you have the cursed late 2011 model it’s probably the LB. Apple offers an extended warranty for this computer tho. Make an appointment at the genius bar and see if they will swap out your LB. Best of luck!
