I've had this issue off and on ever since setting up the Ensemble RX II a couple of months back.? I can't trust that it will be running, so the first thing I do when in Win 7 is check CFGSR to see whether or not the unit is connected.? About half of the time, it isn't and the only way to remedy is to reboot.? After one reboot, most of the time it then shows connectivity but every so often it will take two reboots.? A remedy for this would be welcome.? I've tried different USB ports and in fact it is plugged into four plug hub right now. Thanks.? Jon