My computer gets really hot and loud?

Ok, so i have a NV52 laptop. Whenever I use it, it gets really hot, the charger also gets hot, and it really hurts if I touch it. It also gets very loud, if i'm watching a movie or something, I can barely hear anything they say, because of the loud noise my computer makes. I cleaned the fan inside once and it was quiet for few days, but then it started again. I tried cleaning the fan again, and it didn't work. I always put my computer on hard surface, never on my lap or a pillow or anything like that. What do I do?