Hello Everyone. I have a White Macbook Early 2008 which originally came with 2 GB of memory. Since I use VMWare a lot i decided to get a pair of 2GB sticks to double my RAM. So I removed original RAM and installed the new RAM but when I turned it on nothing happens. So I thought maybe it's a stick of RAM. So I tested one stick with one of my original 1GB Sticks. The computer booted perfectly. Tried it again with the other 2GB Stick and it worked. But when I put in both 2GB sticks in the slots the computer won't boot. What could the problem be?