Jim was updating Windows 10 when his network turned off suddenly. He turned it back on, and Windows turned it off again! What could be causing that to occur? Leo says that your computer can go to sleep when it's not being used, but your devices can fall asleep as well. Leo recommends looking into the driver properties and see if there's a sleep option that's been enabled. If it has, turn it off. Leo also recommends upgrading to an external wifi card for your computer.