I'm an online gamer. but in the middle of the game, my PC ALWAYS shutdown between 8am to 12nn. almost everyday. but when I'm just surfing my PC does'nt shutdown. i checked the CPU temp and its 48 degree C and system is 38. is my PC overheating? is there a problem with the game or is it my PC??/ can anyone help me??Laptop or Desktop? You must be aware that some games demand high output in every aspect of your mobo. POWER Supply, Processor,RAM Module/s, Video and Sound Card. The fans running alongside makes sure they are not overheating. Dust can also impede air FLOW and ventilation. Cleaning it will be an option. If the game you mention(w/c may be an intensive video game) shutsdown your computer, try another game of the same level. But if surfing has not made any issue, it is certain that overheat on either component could have cause the shutdown. Does your computer come straight back on (or do you need to wait - probably for it to cool down, if so - before it comes back on)? Also does it shutdown straight away, or do you notice it stutter and FREEZE, and then shut down?