HP laptop and keeps crashing for no apparent reason

I have HP laptop and it keeps crashing for no apparent reason. The fan always get going loud and fast then it crashes just siting on a desk. I figure it has to do with over heating but it doesn’t seem to be hot on the bottom. it will not restart without letting it sit for a while.

Your description does sound like a heat related problem. Most likely the laptop crashes because the heat sink is clogged with dust and the CPU overheats.

Most likely you can fix the problem if you clean the heat sink. On some HP laptops you can access the heat sink though a door on the bottom. On other models you have to remove the keyboard.

Find a way to access the heat sink and clean it with canned air or air compressor. I think cleaning the laptop will cure your problem.