wifi driver missing

[User_01072024]

I tried all the possible ways and even tried by resetting  my elitbook 840 g6 and still the wifi driver is missing. I reckon this problem occurred while updating windows 11 culmulative update. I thought may be if I downgrade my windows 11 to windows 10  it might help but still the problem still present. I was ussing internet and suddenly the wifi uninstalled by itself I guess. 

[banhien]

@User_01072024 

Do you know what is its Wifi Adapter on the following lict ?

Integrated WLAN options with dual antennas (M.2 2230 socket MIPI/BRI):

Intel Wireless-AC 9560 802.11ac 2 × 2 Wi-Fi + Bluetooth 5 (vPro)
Intel Wireless-AC 9560 802.11ac 2 × 2 Wi-Fi + Bluetooth 5 (non-vPro)
Integrated WLAN options with dual antennas (M.2 2230 socket PCIe/USB):
Intel Wi-Fi 6 AX200 + Bluetooth 5 (802.11ax 2 × 2 vPro, supporting gigabit transfer speeds)
Intel Wi-Fi 6 AX200 + Bluetooth 5 (802.11ax 2 × 2 non-vPro, supporting gigabit transfer speeds)

Regards.