Question My FPS dropped drastically after i cleaned it up

[Azzashadow]

So , i didnt cleaned my computer until i realized that i've already used it for like 2.5 years ( cuz it has a black tempered glass so i barely see the dust). So i cleaned it up with a blower that's also have a vacum feature . So after i cleaned it up i changed the thermal paste . Everything going pretty well until i try to play a game , which is R6 and i got 1 fps ... After that i played valorant with normal fps ( somehow ) but sometimes the fps dropped to one digit for like 3 seconds and then back to normal . Also i realized that my task manager's memory usage never go below 80% even tho im only opening google chrome, which is weird . So i tried to unplug the RAM and plug it again and try the game again , still nothing happened. Here's the screenshot of the taskmanager when im playing R6 http://prntscr.com/t0pq0n

 

[Azzashadow]

So , i didnt cleaned my computer until i realized that i've already used it for like 2.5 years ( cuz it has a black tempered glass so i barely see the dust). So i cleaned it up with a blower that's also have a vacum feature . So after i cleaned it up i changed the thermal paste . Everything going pretty well until i try to play a game , which is R6 and i got 1 fps ... After that i played valorant with normal fps ( somehow ) but sometimes the fps dropped to one digit for like 3 seconds and then back to normal . Also i realized that my task manager's memory usage never go below 80% even tho im only opening google chrome, which is weird . So i tried to unplug the RAM and plug it again and try the game again , still nothing happened. Here's the screenshot of the taskmanager when im playing R6 http://prntscr.com/t0pq0n

 

[Flayed]

Perhaps something came loose while you were cleaning it up