Booting Windows with Hyper-V turned off
Windows technology called Hyper-V is enabled by default on Windows boot in case of using Hyper-V compatible hardware. This creates a conflict with some virtualization software like VMWare or VirtualBox. The fastest solution for this problem is creating alternative boot option for the same system partition, with Hyper-V option turned off. And the fastest way to do this is to use good old windows command prompt.
Fastest way to edit environment variables in Windows 10
Environment variables are really old windows system settings, but these settings are still in use. In order to edit environment variables in Windows 10 usually you should walk this long path:
1. Get to "classic" System settings. You may right-click on This PC desktop icon and select Properties command from pop-up context menu. Also you may open "classic" Control panel (fast way is to do a search for Control panel desktop app), click System and security, click System.