If I had to take apart a laptop to fix a freezing problem, what should I mess with?

I seen in an article that someone took apart a laptop to fix a freezing issue it had. I was wondering what to go to to fix, adjust, clean, or replace. I have a compaq laptop I think from 2011 I believe. In 2012 it started freezing and I just put it aside and bought a new one, so I haven t really messed with the freezing one in years. I ve turned it on and updated it, cleaned files, used an air can to clean it, and took off and on battery and just simple things but never took it apart. Everything works fine, but it just freezes and goes to a black screen. I don t understand it, it doesn t overheat, there s no virus on it, I took care of it in the 2 year time frame I had it. Any Ideas?
Answers

Spock (rhp)

run windows repair tool on it. disassembly NOT recommended -- this is likely a software problem

Starrysky

With no clues what "compaq" model laptop from 2011 (possibly) and what operating system, and what was running when it freezes, not able to guess accurately.

Boris 24

May be,you dso not need to take it apart. Here are a few fixes that have helped other users resolve their ‘Windows 10 freezes randomly’ problem. You may not need to try them all; just work your way down the list until you find the one that works for you. Update your drivers Clear your computer’s temp files Run a memory check Adjust your virtual memory Run a disk check Run System File Checker Disable C-States in BIOS Read more.....

Concerned Citizen

Open up the hard drive and flip the platters over. That is usually the first thing I do for my customers