Hello. I have a Gigabyte G5 KC laptop with Windows 10 Pro. Basically the problem is that the WiFi networks disappear and the only solution I have found is to restart the laptop. Troubleshooting doesnt help. I noticed that the problem occurs after I switch from 1 network to another and in 10-15 mins it happens. The other situation I noticed is maybe 30 mins - 1 hour into using the laptop after being asleep. So basically I can start the laptop in the morning, restart it then use it all day on the same WiFi network without a problem. I am with the latest Windows and WiFi drivers.
have you tried to re install the Wi-Fi Nic driver? You can try that. Open up device manager as an admin and right click on the Wi-Fi card and left click on uninstall. Reboot. If everything works as it should windows will re install the driver but as a stop gap measure, I would download the driver from the pc manufacture site just in case. I would also look at power management option for the Nic and disable windows from turning off the card. To access the power management while you are in the Device manager right click on the Nic and left click on properties. you should see a power management tab. Un check the box allow the computer to turn off device to save power.