Almost There! Now PC is going in and out of sleep perfectly in normal use, I'm now moving on to the 3 Xbox 360's that i use as extenders. When the pc is on they all work fine (albeit a bit slow to respond, but great when actually playing the files) Media Standby Tool recognises there are three extenders. My network card in device manager is set to wake on Magic Packet In the power managment box for the NVIDIA nForce Network Controller. "Allow the computer to turn off the device to save power" is unchecked The other two options Allow this device to wake up the computer AND Only allow a magic packet to wake the computer ARE checked, but greyed out. None of the 360's can connect to the pc whilst it's in sleep mode (obviously) But they aren't bringing the HTPC out of sleep mode. I've temporarily turned off the Windows Firewall. The 360's are connected via homeplugs into my unmanaged switch. The HTPC is hard-wired to the switch. What should i check next?