It used to fix WiFi issues for me back on Windows Vista (bleh). Vista would always have issues when I woke my laptop from sleep mode, and my WiFi would be disconnected and unable to reconnect/properly turn off. Running the troubleshooter would restart my wireless card. Other than that I haven’t encountered anything it’s helped, but I don’t use windows too often these days.
If you wanna support them during this time, they have a second location at Western/Montrose in Lincoln Square. The staff there is always really nice :)