I have a mid-2015 Macbook Pro that recently got stuck in a restart loop. The screen went black while I was using it and it started back up, booted fine, and stayed on for a few minutes before doing it again. Eventually it got to the point it wouldn’t even boot the OS. The power cable was frayed and the battery had been starting to expand but up until then everything had been working so I put off dealing with either issue, so when it first happened I thought maybe it was a power issue. Replaced the power cable, no change, removed the battery, same problem.
It will turn on fine and can get to the login screen, if I don’t do anything it will stay there indefinitely, but if I enter my password it starts loading the OS and then crashes. Same thing when I try and boot in recovery mode. It will connect to Wifi and load internet recovery mode, but after it finishes loading and goes from the globe to the Apple logo, it again starts to load and then crashes. I can get to the start up manager, where again it will stay indefinitely, but if I try loading my Windows partition it does the same thing, starts loading and then crashes and restarts in an unending loop. It can successfully run diagnostic mode, but with the battery out all it tells me is that no battery is detected (error code PPT001), and if I plug it in it says the battery isn’t charging correctly (error PPP003), it gives no other error messages and the only option either way is to either run the test again or start up in recovery mode, which it of course is unable to do.
I’ve been told this may suggest the logic board is failing, or possibly an IO board cable, but from what I’ve read it also sounds similar to what happens when the hard drive cable is bad? At this point I’m considering taking it to a third party repair shop for diagnosis, but if it’s as simple as a bad cable I’d rather just swap out then spend the time and money. Is there any way I can better determine what the issue might be?
It will turn on fine and can get to the login screen, if I don’t do anything it will stay there indefinitely, but if I enter my password it starts loading the OS and then crashes. Same thing when I try and boot in recovery mode. It will connect to Wifi and load internet recovery mode, but after it finishes loading and goes from the globe to the Apple logo, it again starts to load and then crashes. I can get to the start up manager, where again it will stay indefinitely, but if I try loading my Windows partition it does the same thing, starts loading and then crashes and restarts in an unending loop. It can successfully run diagnostic mode, but with the battery out all it tells me is that no battery is detected (error code PPT001), and if I plug it in it says the battery isn’t charging correctly (error PPP003), it gives no other error messages and the only option either way is to either run the test again or start up in recovery mode, which it of course is unable to do.
I’ve been told this may suggest the logic board is failing, or possibly an IO board cable, but from what I’ve read it also sounds similar to what happens when the hard drive cable is bad? At this point I’m considering taking it to a third party repair shop for diagnosis, but if it’s as simple as a bad cable I’d rather just swap out then spend the time and money. Is there any way I can better determine what the issue might be?