08-13-2013, 08:35 PM
Actually, running a magnet over important components is very dangerous! Instead, remove the CPU fan and very carefully remove the CPU and clean it under running water with a toothbrush and a small amount of baking soda. If the problem still happens, try the same with the graphics card. This is a more complex procedure since you must uninstall the actual GPU from the card itself and ONLY clean the GPU before attaching it back to the card with glue.