원문 게시자: pmaddox3 ,
I have just attempted to upgrade my MacBook pro4,1 (the lower case has been acts he'd so I can't read the model number), I have 2 x 2Gb SO-DIMM, however if I install both of them the machine doesn't boot. If I install eather stick along with one of the original 1 Gb sticks it boots. I have tried all combinations of RAM sticks in every slot... So long as there is no more than 3 Gb the machine boots. Is there a trick to get it to work with 4 Gb (2 x 2Gb) installed?