I've been having a lot of problems with my 5100 since I bought it, but of late it has gotten really bad. The computer always overheats whenever there is something animated going on the screen, something as simple as a Flash ad causes the computer to overheat.

The temperatures I'm talking about are 167F or 75C, whenever the computer reaches this temperature it starts to make things choppy. I've tried cleaning the computer, and it doesn't do anything. I have to force the computer to turn on its fan to it's highest setting just to keep the temperature from going any hotter.

What do you think the problem could be? Could it be the Graphic's Card? Could it be the Heatsink? Or could it be something else?

Thanks,

Nick