Latitude E7440 error with touchpad/mouse buttons

Question

I've got a bit of a mystery here. I have a Latitude E7440 that has an issue with the mousepad/buttons. The left click button works just fine, but that is it.

Right click does not work (be default)

The upper mouse buttons do not work

The touchpad works normally for moving the cursor around but does not register tapping.

The mouse "nub" located in the middle of the keyboard does not work.

Here is the weird part. If I go into the touchpad settings and change the Right Mouse Button (RMB) so that it performs a left click then it works just fine, and Vice Versa with the Left Mouse Button (LMB). If I have the LMB perform a right click then it does nothing. Assigning other functionality to the mouse buttons (doubleclick for instance) works just fine. The only functionality that doesn't work is the right click. External mice that I have plugged into the computer have full functionality.

Things I have done to try and fix the issue:

1. Reinstalled the dell touchpad driver.

2. Reinstalled the windows OS.

OS:

Windows 10 Enterprise version 1803 (latest version I can go to at them moment)

Does anyone have any suggestions?

Justin C · Accepted Answer

@ForanJo,

Thanks for the results. Since the upper buttons don't work in the BIOS and don't work in Windows, this is a palmrest physical issue.

Send me the service tag via private message and we can check the warranty and palmrest part number to be searched.

Justin C · Answer

@ForanJo, Good troubleshooting so far. Go into the BIOS and try to use tap to click there. If it doesn't work, you have a physical palmrest issue and should be replaced.

ForanJo · Answer

Thanks for the suggestion. I went into the bios and the touch-pad tap functionality, and the mouse nub in the keyboard started working. The right-click functionality still didn't seem like it was working. The mouse buttons located directly above the touch-pad didn't work either.

I also noticed one other thing when I rebooted the computer. I couldn't click on anything while I was sitting on the login screen (checked this twice). I could move the mouse around normally using an external mouse and the touch-pad, but even with the USB mouse It wouldn't let me click on anything. Thankfully the keyboard is fully functional so I could navigate around and login with that. Once I logged in, I was able to start left clicking on things using the external mouse, and the LMB on the laptop, but the touch-pad tap-click, and the mouse nub had ceased to function again.

Latitude

Latitude E7440 error with touchpad/mouse buttons

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