Chosen Solution
I recently received this macbook from a relative which seemed to work without a problem but recently, when turning on the laptop the screen would look grainy then after a while it would flicker and finally some parts of the screen would just be black. I tried the Apple Diagnostics (pressing D at the start) but it didn’t mention any issue. I also tried formatting my HDD from Internet Recovery and still nothing, also to mention that during the diagnostics and recovery the screen issue didn’t happen. I finally tried booting up in safe mode and it seemed to work but when i booted it normally the problem persisted. Here is a video of the problem: https://youtu.be/bBTXtjmlfbs I really don’t understand what the problem is, I would really appreciate some help. Thanks!
Ouch! Sadly thats the sounds like the CPU thats failed you! This series uses the intergraded graphics engine within the Intel chips HD Graphics 4000. You could try replacing the RAM as this series leverages it for the video RAM. But given the symptoms I don’t think that will help (204-pin PC3-12800 (1600 MHz) DDR3 SO-DIMM) support for upto 16GB MacBook Pro 13" Unibody Mid 2012 RAM Replacement You’ll need a new logic board MacBook Pro 13" Unibody Mid 2012 Logic Board Replacement
