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Los Angeles

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  • Posts: 3
  • Registered: ‎08-29-2015
  • Location: Los Angeles
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T420 / Win 10 Pro / Ultra Nav 19.00/12.61 = TrackPoint and Touchpad hardware buttons unresponsive

2015-08-29, 10:13 AM

System:  ThinkPad T420 4236EP3, i5-2520M(2.5GHz), 4GB RAM, 320GB 7200rpm HD, 14in 1366x768 LCD, Intel HD Graphics, CDRW/DVDRW, Intel 802.11agn wireless, WWAN option, Bluetooth, 1Gb Ethernet, UltraNav, Secure Chip, 6c Li-Ion

TrackPoint and Touchpad and associated buttons were both fully functional in Win 7 Pro.  My laptop displayed no issues with cursor control, or with any of the 3 TrackPoint and 2 Touchpad hardware buttons. 



  • Immediately after an upgrade install of Win 10, TrackPoint pointer and Touch pad were functioning fine, but left and right buttons for both interfaces do not work. 
  • Middle button scrolls, but very choppy.
  • FN-F8 does not bring up Ultra Nav toggle screen.

Fixes attempted: 

  • Uninstall and reinstall Ultra Nav Driver from my Lenovo T420 download page.  No change.
  • Rolled back to Win 7 Pro.  TrackPoint and Touchpad buttons resumed working along with FN-F8 command.. 
  • Reinstalled Win 10 Pro and same problems as described reappeared.again.

End Result:
I abandoned WIN 10 Pro and rolled back to WIN 7 Pro.  This is a work laptop and did not have the leisure time to further research or troubleshoot the issues.  I also could not find any instances of other users reporting the same problems. 

I will monitor this thread to see if there are any suggested fixes.  For now, Win 10 Pro is not a viable OS for my T420 laptop.T42







1 Posts


United States of America

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  • Posts: 1
  • Registered: ‎09-24-2015
  • Location: United States of America
  • Views: 46
  • Message 2 of 2

Re: T420 / Win 10 Pro / Ultra Nav 19.00/12.61 = TrackPoint and Touchpad hardware buttons unresponsiv

2015-09-24, 16:41 PM

Hello - I had the same problem a few weeks after upgrading from windows 7 pro 64 bits to windows 10 pro 64 bits on my t420s. I tired to replace the hardware without sucess with a new palmrest assembly. Finally I found a solution that fixed it by going to the mouse and trackpad settings in windows 10 and there changing the delay setting for the trackpad to respond - once I had changed that setting everything (trackpad buttons and trackpad) worked again.

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