windowscentral[.]com/how-reverse-scrolling-direction-windows-10
You start by finding the mouse or touchpad in Device Mgr. Open Properties, go to the Details tab, select Device instance path in the Properties dropdown, and write down the VID ID value, e.g. VID_0E0F&PID_0003&MI_01 . In Regedit select the matching key under HKLM\ SYSTEM\ CurrentControlSet\ Enum\ HID , select the Device Parameters key, & finally change the FlipFlopWheel DWORD value to 1.