Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

MacBainNO

macrumors regular
Original poster
Jan 16, 2017
114
78
After changing the battery on my friends Macbook Pro mid 2012 model it worked fine for a couple of weeks then the screen randomly started turning itself off. I don't know if the machine itself crashes, but I hear the fans are still spinning. Have tried putting the old battery back, SMC reset etc. Sometimes it can sit at the login screen for minutes with the screen on, but when I try logging in it turns the screen off, but not every time, meaning random. I booted up in terminal modus and then the screen didn't turn off.
Tried reinstalling the OS, but screen cutout midway.

Any idea on what this could be?
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.