2012 A1278 820-3115 Common Memory Slot Fault. Lines on the screen. Freezing Up. Sorted! - YouTube
2019 MacBook Pro 15'… the MacBook powers on and works just fine when plugged in, but the battery 🪫 doesn't charge at all. What could be the problem. Loose connection somewhere or
Distorted Video on Macbook Pro 13" - Ram Issue - Model A1278 Board 820-3115 - YouTube
Your computer is low on memory” Mac virus removal - MacSecurity