The laptop's fan on the underside i can see is not spinning, and I'm not for sure but i don't think the rear exhaust fan is working either. I've looked online and i seen the replacement fan on the one on the bottom is like 80 bucks, but seeing how i don't think the rear one is working either I'm thinking something else might be wrong. The computer works for a bit but obviously it shuts itself off after a little bit due to overheating. I installed speedfan and it didn't detect any fans and only one temp that was like 45C at the most. I just want to see what's the cheapest option to get it fixed to use on break in between classes. The model of the laptop is PCG-GRT260G.