Once it restarts and reaches the Wi-Fi screen again, go back one screen to "Connect to Mobile Network".
Your PC lacks the correct drivers. Reinstall BlackBerry Link or manually update the device drivers via the Windows Device Manager under "Network Adapters" or "Ports." blackberry classic anti theft removal firmware
The Ultimate Guide to BlackBerry Classic Anti-Theft Removal and Firmware Flashing Once it restarts and reaches the Wi-Fi screen