Cannot connect to wifi: 'Windows was unable to connect to [SSID]'

Hi there

1. Wireless issue.
2. ISP: BT.
3. DSL connection.
4. Router: BT Smart Hub.
5. Anti-Virus S/W: AVG.

I have been unable to connect to any wifi for some weeks. My machine is a Dell Inspiron 15 1570 laptop.

The router and wifi works fine for other devices.

I have used the MS Windows 7 support forum (and others) which recommends the Windows network troubleshooter and then a series of steps after this. None have worked (although have not updated any network adapter driver).

Nwk Adapter is:
Realtek RTL8168

Device Manager reports the network adapter is working ok, although I have not been able to prove this another way. (Device Manager screenshot attached).

I have tried to connect to the Router with security switched off -no joy.

ip config file is attached.

Have run out of ideas on how to isolate the root cause of this failure to connect... ideas and advice please.

Thanks
Niall

What is the avast running that is known to give network errors remove all avast and get their removle tool from there site then reboot disconect network cable and see if it works then.


Download https://www.sevenforums.com/attachments/chillout-room/406447d1546530081-new-skin-wireless.bat right click choose run as admin post results that will tell us if its working

Have now added link to the ipconfig file from another laptop whilst successfully connected to the same WiFi Router:
https://i.gyazo.com/a2ded4f85e4e0328...1f0f03ed8e.png

Both of the reports, show that IPV4 is NOT turned on
BT doesnt use IPV6 so you need IPV4

note installed drivers is showing an Avast driver not AVG, you can uninstall it
Roy