Windows 10 64-bit pro reserves 8GB of RAM for hardware out of 16GB - Microsoft Community
How Much Ram Does a Windows 10 PC Need?
14 inch Laptop Notebook Computer PC, Windows 10 Home 64-bit OS Intel CPU 4GB RAM 64GB Storage, 1366x768 IPS Display 10000 mAh High Battery Life, WiFi Mini HDMI Compatible with Bluetooth