De: Como faço para que meu trackpad do macbookpro funcione com o Windows 8? - Comunidade da Microsoft
I upgraded windows 7 enterprise to windows 8 (build 9200, 26 Oct 2012 release) there was no response from the the trackpad and I was getting code (1) error when trying to install manually the win 7 trackpad driver, but a mouse worked fine. What worked for me to get back all supported gestures and the trackpad is:
uninstall both trackpad drivers from device manager. For some reason I was seeing two trackpad devices. (Type devmgmt.msc in Search bar to access it).
Then right click on the trackpad device chose update driver -> "choose location on the computer" -> then "let me pick from list of devices" -> select "usb input device" !!! for both trackpad divers.
Then simply run the bootcamp 4 disk, but do a repair. Everything works fine.
(Macbook pro early 2011 13" with latest lion and dual boot with windows 8 enterprise)