I've navigated to Device Manager, but without the mousepad, I can't get to Human Interface Devices to update the mousepad....any ideas??
Use your keyboard. Tab and first letter navigation. CursorRight to open a node. The hard part IMO would be trying to find the right device in that collection. I'm trying to find a way using wmic to help me identify things more easily.
FWIW my Synaptics is controlled via Mouse Properties instead. That makes it easier to get at its device control. Have you looked there instead?
Related to Mouse Properties (Pointer Options) press a Ctrl-key in case you have Mouse Sonar activated. That way you could tell where the mouse pointer was even if you couldn't see it because it would be at the center of the Mouse Sonar circles.
Another possibility might be using a different mouse device. Mousekeys for example. Press and hold Alt+Shift+NumLock to activate Mousekeys. Note that you need a keyboard with a Numeric keypad to use it. Once it is active you would just use any number key but 5 or 0 to try to move the pointer and therefore hopefully expose it.
The problem may be that your Touchpad is emulating remote Touch screen features. In that case having a real mouse to move and show the pointer would be a solution. FWIW I can recommend an MS Arc Touch Mouse if you need one that is really portable. (The "Arc" is a clever switch which conserves battery, makes flat storage, or is reasonably ergonomic when it is in use.)
FYI
Robert Aldwinckle