Press WINDOWS+R to bring up the Run window
In Open, enter shell:startup
Delete the OpenTabletDriver shortcut
If OpenTabletDriver processes are running, then stop them.
You can use Task manager for stop the processes, or you can stop the processes with these two Powershell commands
Delete the folder that contains OpenTabletDriver
Navigate to the folder that contains VMulti
run uninstall_hiddriver.bat as admin