I have three Dell Inspiron 11's in our family. They're identical except for the users.
On one of the machines, I am having an issue with the Touchpad. It's not one I use; so I don't know when it began.
The touchpads are by Synaptic.
On two of the machines, there is a small app called Dell Synaptic Touchpad that enables the user to make adjustments as to pressure sensitivity, being on or off, etc. In Device Manager, the drivers are identified under the Mouse heading as "Dell Touchpad". In the programs section, there is a populated folder called SynTP that holds the application.
On one of the machines, none of this applies. There is no access to a Touchpad settings app - Win 10 only allows me to adjust the length of response time (if that); and only through their generic Win 10 settings page. Device Manager doesn't see a "Dell Touchpad"; instead there is a "MS Mouse" which doesn't exist. And the SynTP folder is unpopulated. Keep in mind: the Touchpad works without any problem - I just can't access the apps that let me control it.
The machine is totally up-to-date; has the same software (or less) than the other machine; and has no detectable mechanical issues.
I have tried the following, in almost every permutation possible:
1. Downloading and reinstalling the latest drivers for the Touchpad (each time, I get a message that there is an earlier version already installed that I should delete myself -- unfortunately, there are no listings in Programs for either a Dell Synaptics Touchpad or a Synaptics Touchpad. So I just tell the install to continue.
2. Running a mild registry cleaner as a last resort.
3. Disabling the driver for the spurious mouse.
4. Updating the driver for the mouse (no updates found either on the web or on my machine.
5. Removing the drivers for the mouse (Windows simply replaces them).
6. Re-updating Windows
7. The Synaptics website (useless)
8. Dell Customer Support (well, that was 4 hours lost)
9. Deleting all references to Synaptics from the Registry (carefully)
That's it -- anyone want to see if they can outdo Dell?