what should i upgrade

Hello, i have a question. I have an old PC and i really want to upgrade it for simple gaming (Like Minecraft, Roblox, etc.) There is my parts: CPU : Intel Pentium E2180 (Overclocked to 2.5Ghz, that's the maximum, because when i overclock more, happens some issues like No Internet Connection, No...

My laptop would appear to be running fairly hard(mildly warm and fan running fast) even without any CPU intensive applications(only google chrome and word). I have cleaned the dust out and it has not made any difference. When I use photoshop or solidworks it does not seem to be running too much...