Before you do anything, try this: Go to device manager (Windows key + X is the quickest way there) Under network adapters, find your wifi device and get properties (right click it) Go to the "Power Management" tab and uncheck "Allow the computer to turn off this device to save power". What kept happening to me was windows would turn off wifi to save power when the laptop was idle, but wouldn't turn it back on. This workaround solved the issue for me.