Macbook sleeps when turned on

I was using my MacBook today just checking out some websites and stuff when all of a sudden my computer went to sleep. I clicked using both the trackpad and a mouse that I like to use with it in an attempt to wake it up. I pushed some keys on the keyboard in another attempt to wake it up. I turned it off. Nothing. Turned it back on and it would just turn on but as soon as it turns on, the computer screen is black and the sleep indicator beside the IR sensor turns on. I have no idea what to do. Any help would be greatly appreciated. Im not sure which operating system I have but I bought the MacBook back in August if that helps at all.

You might want to read this article as a possible cause. You may have to boot in Safe Mode (Shift key down through boot) to get past the immediate sleep issue, then install the updates.
-Douggo

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