Lenovo ThinkPad Helix 369847B touch pad stops working after re-docking screen

Hi, I've been having problems with the touchpad on my Lenovo ThinkPad Helix 369847B. If I un-dock the screen to use in tablet mode and then re-dock with the keyboard, the touchpad might not work (no mouse, no left or right click), but the screen and keyboard still work. The same also happens (sometimes) if I sleep the machine by closing the screen then re-opening. Can't find a way to get the touchpad to work again, other than a restart, which is quite frustrating. Tried removing the screen, resetting the keyboard with a paperclip and re-docking - but no luck. Can anyone please tell me how to get the machine to recognise the touchpad again, without having to do a reboot? Or any way to stop this happening? Machine stats:Lenovo ThinkPad Helix 369847BWindows 8.1 Pro 64-bit Also the machine is fully updated via Lenovo System Update & Windows update + latest keyboard firmware. Thanks Christopher

hi paul_peria,
Welcome to Lenovo Community Forums!
Can you try Opening Device Manager and open Human interface Devices
Uninstall everything that starts under with "HID-"
If your are not done uninstalling all and it asked for a restart choose restart later then continue uninstalling the one's that starts with HID-
Then Restart your system, check if the touch functionality works.
Can you also check under System Properties windows if it shows touch input detected
http://www.cybernetman.com/files/siteContent/editor/Pics/KB298/KB298_05.png
Best Regards
Solid Cruver
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USA/Canada – Contact HP // Self-Help – Email - Chat
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Lenovo ThinkPad Helix 369847B touch pad stops working after re-docking screen

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