I noticed one more thing. Your windows 10 is shown as 32 bit. I hope that is not true. If yes, then you need to reinstall windows and selecting the 64 bit option this time. 32 bit OS dont address more than 4GB of system RAM (including VRAM). So, if you upgrade your RAM, you will need to reinstall windows 64 bit. You dont need to purchase a separate license for it.
To double check right click on "this PC", click properties. You will see here whether the windows 10 is 32 bit or 64. I didn't even know that they still make 32 bit operating systems!