Recently, in an effort to see if I could see if something was wrong with the computer, I noticed that it was pretty dusty. I took a can of compressed air and blew a decent amount out, but the fan unit (mainly the heat sink, I believe it's called) was fairly dirty, to the point the stuff was caked between the little white fins.

I still need to properly clean that out when I get more compressed air since I ran out before I was finished, but I thought that might be important to mention.

Please help.

Thanks!

I didn't find the right solution from the Internet.

References:https://forums.techguy.org/threads/playing-games-on-steam-leading-to-monitor-no-signal.1192643/

whiteboard animations