Previous 1 2 Next 23 Replies Latest reply: Jun 21, 2012 1:14 PM by Mike Sombrio
jberry Level 1 Level 1 (0 points)

My iMac had two 1gig sticks of memory. When Lion installed, I needed 4 gigs.


When I put one 2 gig stick in (meaning I have 3 gigs total now), display works fine. When I add the second 2 gig stick and turn iMac on, computer is on, but display is black. I have interchanged the new memory sticks by themselves in the imac to make sure they are both fine, which they are.


Soooooo......when I have either one of the new 2 gig sticks in (either memory stick--they both work properly), the display works, but when both 2 gig sticks are in, the display is black.


My model (late 2007) indicates computer will take 4 gigs total.


Please help!!!

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