Why does the RAM work in one MacBook and not the other?
I have two Core Duo 2 Macbooks, one with upgraded RAM to 2GB, and the other with the standard RAM cards the Macbook came with.
The second one is in better condition, so I'm transferring parts between the two, but when I put the 2GB of RAM in the better condition Macbook it doesn't work! It turns on, but nothing happens, it stays black.
The one that likes the RAM's serial number: 4H70367MWGL
The one that doesn't like the RAM: W87421ZAZ5V
Please help! Many thanks!