flying snow wrote Is the model D7 or C7? Did you try reset it to factory settings? If no, you can have a try.Also what's the hardware and firmware version of your router? You can go to TP-LINK...

Model : Archer C7 Hardware Version : Firmware Version : ISP : plusnet My 10 month old Archer D7 duel band has lost it's 5ghz band facility, it was working fine but now it will not connect. some help...