Please confirm whether the wireless network card status on the computer is normal? If no, you are advised to check the computer NIC. If the wireless NIC is normal, check whether the WLAN indicator on the cat is on. If the WLAN is on, find the wireless signal consistent with that of your wireless Modem in View Available Wireless Networks. After connecting to the WLAN, enter the wireless network key on the back of the modem, and set up PPPOE dial-up software to access the Internet.