XE75 Pro loses Internet Connect after scheduled reeboot
I have a weekly reboot scheduled on a Sunday night. Each Monday I wake up to no Internet connection. I set the DNS to 8.8.8.8/8.8.4.4. The strange thing is when I update the settings in the Internet Connection>Primary DNS>DNS Address> (set to manual) to 8.8.8.8/8.8.4.4, after saving it goes back to IPv4 screen and I hit save again there it gives me a wait message then goes back to the Internet Connection page. At the top next to IPv4 Connection I get a spinning circle for about 20 seconds and then all the DNS settings are blank again.
Doesn't matter how many times I enter the settings they just disappear.
It is a BT broadband hub. Ethernet cables have been changed, system manually rebooted dozens of times.
Help before I return it please.