Originally Posted by evildick

Cover all the vents / fans with masking tape so no air can escape. Load up some sort of 3D video game or other processor intensive app and let it run.

Eventually it will overheat. Might have to make sure there are no settings in the BIOS that cause it to shut down automatically if it gets too hot. If there are, you should be able to disable them so you can fry it all you want.