MacBook Pro 15" not accepting 8 Gb RAM

[mkez125]

Help!

This is the same problem I have! Ive tried three different kinds of RAM and none work!

 

[Ifti]

Trying several different sticks of RAM from different manufacturers and still not working should tell you somthing. Its not the RAM, its your system.

 

[Rhinoevans]

I know you have tried this, but are you sure you pushed hard enough to seat them. I remember my fist desktop build, would not boot, and RAM not totally seated. Just saying.