You have to reboot your Windows 10 OS again. Select the OS from the boot menu and allow your device to boot. Once done, double click on the setup.exe file and run as administrator. Now, you will see 3 options. Click on the “Uninstall” option and move ahead. The wizard will ask for your confirmation whether you want to uninstall or not. Click on “Yes”. The process will be started. Once it is over, click on “OK”. The OS is now being removed.