4 Replies Latest reply: Jun 16, 2013 12:29 AM by Dro357
Dro357 Level 1 Level 1 (0 points)

Please help,


I have a white macbook mid 2010 model.  Today I attempted to upgrade the RAM in my machine but to no avail.  The ram I purchased was 4 GB (1 x 4 GB) - DDR3 SDRAM - 1333 MHz DDR3-1333/PC3-10666 - Non-ECC - Unbuffered - 204-pin SoDIMM PNY 4GB DDR3 SDRAM. I already tried to upgrade a few years ago so I had 3gb or RAM in my machine.  I wanted to buy a 4gb stick and use it along side the 2gb stick that I have in now.  When I put both sticks in my computer just beeps and wont boot.  It will however boot, if i put either stick in alongside one of the original sticks that my machine came with, which would either give me 5gb or 3gb.  I have seen people with similiar issues and the answers given was bad ram or bad memory slots.  If the memory or the slot was bad, it would work at all no matter what combination you used so that really dosen't make any sense to me.  If someone could help me, I would appreciate it.

MacBook, OS X Mountain Lion (10.8.3)