Replace a W540 Touchpad with a 3 button W541 Touchpad

Replace a W540 Touchpad with a 3 button W541 Touchpad

Solve driver problem after replace the touchpad cannot use the 3 button

https://forums.lenovo.com/t5/ThinkPad-P-and-W-Series-Mobile/Replace-W540-Keyboard-with-W541-Trackpoint-Buttons/m-p/2216296#M53817

Windows 10 update will continue to install synaptics updates, when this happens, just run the registry fix

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SynTP\Parameters]
"ExtraCapabilities7Add"=dword:00010000
"ExtraCapabilities7Mask"=dword:ffffffff

Save it as touchpad.reg, run it and reboot. Done


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