Replaced battery, now computer wont fully turn on - Mid 2012 Macbook Pro

[djt511]

Hello,


I replaced my battery on my MBP today with an "OEM" i purchased from eBay. While changing the battery I did the bonehead move of tearing the ribbon that goes from the trackpad to the logic board. I put together the Mac anyway to turn it on and make sure everything else was working, to computer turns on and i type in my password on the login screen when the Mac goes to a screen that says it was shut down unexpectedly and to press any key or wait. When i pres any key i just get a blank screen with fans running on full speed. I can't reset PRAM, that didn't work when i tried.



Any suggestions, would having a severed track pad cable cause it to not start up properly?



Thanks in advanced,

Danny T


MacBook Pro (Retina, Mid 2012)

 

[joe-h2o]

Your system is having a kernel panic - are you sure you didn't damage anything else during the install process?

A damaged trackpad cable should just prevent the trackpad from working. I don't think there are any system-critical functions carried on that cable except perhaps a temperature sensor, so it shouldn't panic because of that - it should just log errors in the console.

If you'd really damaged it then it would panic on boot, but I suspect it's trying to load some software when you log in that is doing something that causes the now-broken system to bork. Perhaps it's a conflict with the HID stuff due to the broken cable.

Have you tried it with a mouse plugged in? It could be the "I can't find a mouse!" popup window that launches the bluetooth discovery app on the login screen if OS X can't detect one.

 

[makinao]

If you were clumsy enough to tear a ribbon cable, you knows what else you damaged.

The only other probable cause would be the battery itself.

 

[simonsi]

Quite possibly as the trackpad is hardwired therefore a working machine has one all the time. TBH it would be a coincidence of monumental proportions if they two things weren't related. If you have a USB mouse you could try connecting while booting just in case but in my Mac-Mini experience you get a meaningful message if there is no pointing device, but that is on a device without one built in.

 

[djt511]

Your system is having a kernel panic - are you sure you didn't damage anything else during the install process?

A damaged trackpad cable should just prevent the trackpad from working. I don't think there are any system-critical functions carried on that cable except perhaps a temperature sensor, so it shouldn't panic because of that - it should just log errors in the console.

If you'd really damaged it then it would panic on boot, but I suspect it's trying to load some software when you log in that is doing something that causes the now-broken system to bork. Perhaps it's a conflict with the HID stuff due to the broken cable.

Have you tried it with a mouse plugged in? It could be the "I can't find a mouse!" popup window that launches the bluetooth discovery app on the login screen if OS X can't detect one.

I didn't physically touch anything else during the install, so i'm not sure if anything else got damaged. So not that i know if..

The last time i booted it i was actually able to log in and it was very sluggish, taking 3-4 minutes to load, once partially loaded i got a screen asking to connect a bluetooth mouse. The next time I restarted so I could connect a mouse i just get a apple logo with the loading bar, its been on that screen for the past 15 minutes now.

Quite possibly as the trackpad is hardwired therefore a working machine has one all the time. TBH it would be a coincidence of monumental proportions if they two things weren't related. If you have a USB mouse you could try connecting while booting just in case but in my Mac-Mini experience you get a meaningful message if there is no pointing device, but that is on a device without one built in.

I am trying that now.
[doublepost=1454113620][/doublepost]After loading i am at a Reset Password screen

Options are
I forgot my password
My Password doesn't work when logging in
My keyboard isn't working when typing my password to log in.

What do i do from here?

 

[simonsi]

Keyboard and trackpad are on the same internal USB bus. I'd say you need to fix the trackpad cable. Not very surprising.