Ok so I upgraded my MacBook's ram tonight and now when I turn it on the Apple logo an spining thing come up then after a bit the screen dims and it says, "you need to restart your computer. Hold down the power button untill it turns off, then press the power button again." I had two 1gb sticks and I put in a 2gb so I'll have three. I put the new one in the top slot but accidentally poped up the bottom one too. I've tryed about four times and put the original one in and get the same results. Could it be that I didn't push it in enough. If I can't get it to work tonight can i take it to the Apple store for them to see, and will I still be covered, I know they don't cover the new ram.