I'm on my computer now, where can I find its specifications?

(sorry, I am illiterate when it comes to technology)

I have an AMD GPU (radeon 6570) a quad core intel CPU @ 2.50GHz, (Q8300) 4GB...

In the first week or so, Windows performed quite smoothly (albeit with some slowdown playing games) and was for the most part perfect.

However, quite recently my experience with Windows 10 has...