I don't know what to do. It gets super hot and uncomfortable to type. I already can't use it on my lap because I would literally burn my thighs. It also gets super loud (fan) if I try to add a game to the mix and everything starts stuttering till I just shut it down.
I've done this, and sometimes replaced the fan, on a few laptops for friends/family and it helps immensely.
Also maybe replace the cr2032 bios battery while you're in there if the laptop is old to replace it before it dies.
what.
The little watch battery on the motherboard that stores the bios settings. If it dies, then whenever you swap the battery (or sometimes even on laptops if you just turn it off) it will forget any BIOS setting changes you made and pop up a first-time boot menu.
O.O
So you'll lose everything??? Wtf?
Nah it will boot up just fine, the PC clock will need to sync from the internet each time though, and some bios settings might need to be re-done. It's not a huge deal, just annoying and it's easy to swap if the laptop is already taken apart.