Problem solved! Detailed Description Summary below It's been a while since I've been to these forums but I've come across another issue. I bought this refurbished Macbook from Apple on November 26, 2008 (model MB061LL/B). It originally came with two 512MB RAM sticks. About two months ago, I finally bought two 1GB Crucial RAM sticks from Newegg.com Upon installing the new RAM, I noticed it wasn't a perfect fit. I had to push in the RAM with quite some force until it clicked (which it never did). It fit, so that was good enough for me. However, the L-bracket would no longer screw back into place unless I forced it to. In fact, the areas between the two outer screws and the inner screws bulged. Quite so that the battery would no longer fit comfortably after I replaced it. I didn't think anything of it as I started using my Macbook now with 2GB of RAM. [Side note: I took these pictures today to help illustrate] Today, I came home and opened the lid. The screen stayed black. The white glowing light turned off. The Superdrive did not make the usual mechanical sound that it always makes whenever I wake up the Macbook or launch iMovie. It didn't respond to keyboard presses or even holding down the power button. I pulled the battery and restarted. An hour later and Firefox began hogging more memory than I felt comfortable with. I noticed I only had one 1GB of available RAM. System Profile reported that memory bank 0 was OK but memory bank 1 was empty. So I powered down, removed the battery, and started removing the L-bracket. After a month or two of sustained pressure by the L-bracket and battery, I think the memory slots had enough. I can now just pull out the RAM sticks without even using the lever. They slip right out. Summary One memory slot reads empty on system profiler. Two 1GB memory sticks installed. They don't fit well; they slide right out. Why is this? What can I do to solve this problem? I searched for an answer and I can find people who experienced the same things. Will a PRAM/VRAM/SMC reset solve things? Is the logic board flawed? Early thanks. [Edit 1]Tried PRAM/NVRAM reset. No dice. [Edit 2] Problem solved, thanks guys.