2011 MBP 15 acting really weird.

[Ddom1994]

I bought a 2011 MBP 15 with a failed gpu that i successfully fixed with the efi workaround but it also has a bad keyboard (G-L) wont work f barley works. i decided to take a look at the ribbon cables and make sure everything was connected correctly and when i put it back together it wouldn't power up at all, Green light on the magsafe sleep light blinks every second fans kick after every blink. I finally got it to boot but only after i unplugged the trackpad cable, WHY? does it boot only after the track pad is disconnected.

 

[Audit13]

It is my understanding that keyboard and power cables are routed through some of the trackpad's circuitry.

I had a mid-2013 Air that refused to boot but did charge. When I disconnected the battery, trackpad, and connected the charger, it turned on by itself. After I shut it down, I reconnected the trackpad and everything is back to normal.