You seem to be confused over your system components. I think your GPU is onboard graphics. And limited info on your CPU. If you click on the start button at bottom left of your screen then on control panel then system it will show your proccesor and memory there. Whilst there click on device manager, then on the arrow next to display adapters, and this will show your graphics card. I think CSGO will run at lowish settings ok, but not Arma 2. But will need to see your proper specs to be sure.
What is ransomware and how do I protect my PC from WannaCry?