Just got my UX31 yesterday and the first thing I did was update all of the drivers with asus live update and then update the windows updates. Everything has gone well except that when I pluged my Samsung 1TB, USB 3.0, 2.5" drive into the 3.0 port windows tried to install a driver for it but failed and now it just powers on but doesn't come up as a drive even in disc management. The drive works well in another laptop i've tried it with that had usb 3.0 and it works fine on the zenbook's 2.0 port so I'm fairly sure it's a driver related issue rather than any problem with the drive itself. Also I have tried a 1GB flash drive in the 3.0 port which worked fine. I have tried updating the usb 3.0 drive to the latest version via asus' driver database but have got the same result. Anyone got any ideas? I'm feeling like a reinstall without the asus bloatware might help but would like to avoid if possible. Any help or suggestions are appriciated!