I too was able to get all hardware working with Windows 7 except for the touchpad on my brand new ROG GL552VW-DH71 model (I also have software that is incompatible with Windows 10 so I am dual-booting Win 7/Win10). The ASUS site has about 18 Smart Gesture drivers for Window 7 64-bit on their site, I only managed to get two of them to actually install. Even then, although the Smart Gesture control panel would open, the touchpad did not respond at all (the cursor would continuously flicker, but could not be moved). I gave up. The touchpad on this model is not very well-made anyway, so it is not a great loss. Do yourself a favor, wipe all the fingerprints from the touchpad area, get a Bluetooth mouse and forget about getting the touchpad to work. Ironic that the only driver actually provided by ASUS for ASUS hardware does not work.. Calls to Technical Support confirm that a proper working drivers for Windows 7 for this model will never be provided by ASUS. Maybe someday an open-source solution will emerge.
The two Smart Gesture drivers that
did install the Smart Gesture Control Panel (but did not work properly) were:
SmartGesture_Win7_64_VER2219
SmartGesture_Win7_64_VER308
and are accessible from
http://www.asus.com/support/Download/3/479/0/20/30/