We all are very well evident with the fact that Windows 8 can be used on touch as well as non-touch devices. So the registry database of this operating system contains the configuration for touch operations for Windows as well. Consider the scenario, you’re using a touch operated Windows 8 or 8.1 system. After you login, the mouse pointer disappears and it practically behave like arrow keys.
From this Microsoft Community thread, it is worth noticing that this appears to be occurring on touchpads, while the external mouse connected to the system works fine. If you too are facing trouble with this, you might have observed that it is like the very opposite of mouse keys, that is, you can control arrow keys using the touchpad. Now let us try to inspect what happens to cause this, as I said before the issue is only with touchpad, so we should checkout the touch operation configuration entries in registry.
Mouse pointer disappears
1. Press Windows Key + R combination, type put Regedt32.exe in Run dialog box and hit Enter to open the Registry Editor.
2. Navigate to the following location:
3. In the above mentioned location, right click on Synaptics key and select Delete. Now in order to activate the changes you’ve made to the HKEY_CURRENT_USER registry branch, reboot the system.
After restarting the system, the touchpad would work as it should be.