How do I perform a system recovery on the HP ProBook 650 G1 running Windows 10?

You can recover the system using HP Recovery Manager, which allows recovery via the HP Recovery partition (on select products) or using HP Recovery media. Before starting, note that recovering using HP Recovery Manager will remove any data added since the original factory image. You can also create HP Recovery media beforehand using the HP Recovery Manager tool, and change the computer boot order if needed to boot from recovery media. (Page 133)