I have also tried on a desktop running windows 8 with ATI 4800 graphics with the same result now. Hopefully someone has a solution to this.
Touch controller shows up as:
Driver Node Strong Name:
input.inf:Standard.NTamd64:HID_Inst:6.1.7601.18199 ::generic_hid_device:usb\class_03&subclass_01:usb\ class_03
From this i see that it is just using some generic HID driver for windows. maybe atmel provides a specific driver for this product?