Laptop Slowing down despite clean reinstall

[kryzn]

Hello

About a 18 months ago, I got a Gigabyte U2442N Laptop with the following specs:

Intel Core i5 3210M, 2,5GHz,
8GB RAM, 128GB SSD +
750GB HDD, 2GB
NVIDIA GT640M

Initally I was very happy. The Laptop handled daily tasks and Far Cry 3 without issue, and was portable to boot.

Overtime, the laptop has slowed down considerably. There is FPS lag at lowest settings, even in relatively undemanding games as League of Legends , and even chrome is acting sluggish.

I have already reinstalled a clean version of windows, but performance is still very wanting.

Does anyone have any ideas how to diagnose what is wrong with the laptop, or how to fix this?

Thanks

 

[caqde]

Have you tried dusting the computer out using an air can? I friend of mine had a laptop that started acting sluggish that I noticed had really high temps and after blowing out the dust started acting normally.