Hello there please open a web browser on this computer that you're using to talk to me and type in the IP address of the router.You will be presented with the router log in page. Try admin as the username and password ***** the password. If no luck then try 1234 for the password ***** even try leaving the password *****Once you are connected to the router's admin page you can go to the wireless set up and activate the SSID again which will make your router discoverable again.If you still have no luck, you can reset the router which will return it to the factory settings using the passwords which should be on a label on the rear or bottom of the router. When you do this, any change to the router that you have made such as changing the password ***** be lost.
Hello sorry for the delay in replying but I am in South Africa.Please go into the Wifi adapter Properties than Update Driver "Browse my computer for driver software" and "Let me pick from a list of device drivers on my computer" Pick the option for your adapter and the 5GHz wifiDon't let Windows use the default driver otherwise it'll tell you that the driver is already installed. You must choose the "Let me pick from a list".Please report back