If you can avoid it, do not go to Geek Squad! They are terribly overpriced. Any college student could probably fix what's wrong for $20 while they charge $60 just to look at it. Since you are in NJ there is probably a ton of local computer repair shops that will look at it for free and let you know what's up. It is probably just the fan, or if you use it on a soft surface (bed, pillow, even your lap) that could be the problem to. Laptops usually only have one little port for the fan so if that is blocked, it's lights out. Get it fixed ASAP though because overheating can quickly cause damage to other things (motherboard, processor, etc.).