Have reset the spro4 to remove any programs and apps that I had installed. I know the touchpad works in the bios area after doing a volume up-power button reset, but when windows starts the touchpad stops. It always occationally darked for 1 or 2 sec and then back to normal. It appears that after the last upgrade to the surface pro 4, my touchpad doesn't work anymore. The current problem is my external monitor. I don't know either but now it seems working good. Mmmmm well this version of voodooi2c doesn't need voodoo input for touchpad to work that's why voodoo input is not there to crash after opening the led but I dunno what is with yours any ways is it working fine now? and also the voodoo input kext is no longer in kexts folder, but there is still a bug that the typecover/touchpad some times work some times needs to close type cover and open again to make it work I dunno how to fix that yet :D Although it is common for gadgets and computers like Surface Pro 4 to freeze and stop working at random, it does not mean you should just ignore them. 7 Solutions to Freezing Surface Pro 4 Problem. There are ways to resolve your problems with Surface Pro 4 freezing randomly. I replaced my EFI with this one and found VoodooI2C's VoodooInput was not checked in ist which caused toupad not working. Now, if you are among these Surface Pro 4 users, fret not. LATEST FIX FOR voodooi2c crash after surface cover close then open (wait for Bigsur update ) But you have updated the Bluetooth mouse driver just now, so in this case, you may. When you are connecting Logitech MX Master, Microsoft Surface Mobile mouse to your laptop or desktop, it may not be detected or not be connected to Windows 10. Solution 4: Enable Bluetooth Automatic Services. The difference is I have an external monitor on Dock. Related: Logitech MX Master Not Working on Windows 10. Hi ,I used this OC and found th type cover and the touchpad on it still high possible not working when wakes up. Sorry this is the file with the wakeup LED opening fix

Surface pro 4 touchpad not working