But since Macbook won't power at all with 4GB 800 MHz, he has put the original 2GB 667 MHz memory back.

Second he tried to replace newly bought Kingston Apple 4GB(2x2GB) DDR2 800 MHz ( ) with original 2GB(2x1GB) 667 MHz memory. First he erased the hard disk using DBAN. Oh, and apparently this seems to be a problem frequently experienced by owners of 2012 13-inch Macbook Pros (my model exactly).I'm helping a friend here trying to get his Macbook back up n running as his Macbook A1181 won't boot and keeps beeping on startup, nothing shows up on the screen, not even an apple logo (screen stays blank/black). It is in Italian, but what the tech does is pretty clearly demonstrated, and someone in the comments section explains it in detail.īasically, you insert something non-conductive underneath the bottom RAM slot, and that stabilizes the RAM so that the laptop stops this lines, freeze, shut-down, 3 beeps thing.ĭo yourself a favor and watch this video! I followed the instructions yesterday and my laptop is back to its old, reliable self. I was just considering the necessity of purchasing a new laptop that I currently cannot afford AT ALL, when I came across this video: This is REALLY a pain because a laptop is supposed to be portable. If I tried to restart it, yes, that’s right: 3 BEEPS! At first, the 3 beeps would sound if I moved my laptop to another room, but soon, I only had to look at it wrong and then I’d get lines across the screen, everything would freeze, then my laptop would shut down. I tried physically reseating my RAM and that worked for a while, but the problems reappeared and the frequency increased.

Macbook pro 3 beeps no startup