My Macbook is just about 3 years old. It's had 2 new hard drives, and just got a new battery. This morning, I turned it on, got into OSX, opened up a Safari, and suddenly the screen went black and the computer shut off. The battery is still fully charged, and is barely a month old. I checked the RAM and hard drive to make sure they are seated properly (they are). I pulled out the ram, and noticed some VERY small little spots of a liquid/oil substance on the ram pins. I did not spill anything on it and it has not been exposed to any liquid. And even if it was, how could minute traces of it get onto the RAM pins when the ram is inserted into it's slot? Could a transistor or capacitor have finally burst or leaked/perspired whatever stuff is in there? I didn't just "spill something on it and didn't notice." The thing was sitting on my chair all night, and worked for a few minutes right on my lap before going dead. There was no spill. The power button does nothing now. The computer is 100% unresponsive. A brick? Or is there something else to try?