I have the same issue with Windows 7(x64). Turning on Helix crashes Windows. After the automatic restart & post, Windows loading screen just hangs. Using another computer is not a fix, but I suppose I can fire up VMware and have a 2nd PC/Profile with stripped down drivers and utilities as a workaround until a more stable set of drivers become available.
I did update my firmware when I first connected the USB to my PC, so I guess another workaround is to unplug the USB cable, turn on Helix and re-plug it in. PITA