I have the same problem, I tried removing RAM and putting it back in. But that didn't fix it. I've taken apart the laptop, cleaned the fan, and everything, tried fixing connections with buttons, but no success. Something odd, when I plug in my charger to my laptop, the little green light just goes out and it doesnt say its charging or anything, this happened a few months ago my laptop just randomly turned off by itself and never turned back on again and I have the charger problem with the light going out. If anyone can help, I'd appreciate it.