D810 and DLink DSL G604T

I have a problem with my D810 and a Dlink wireless broadband router.

 

The broadband router is connected by ethernet to a Dell desktop. The desktop and access the internet.

 

When I activate wireless on my notebook I cannot access the internet via the broadband router. Also, once the notebook is connected wirelessly, the desktop losses its internet connection. Both the notebook and the desktop can access the router configuration via a web browser but both cannot access the internet.

 

If I switch off the notebook wireless and reboot the broadband router then the desktop accesses the internet without a problem.

 

This fault only developed over the weekend. Previously both could access the net, together, without any problems.

 

Any one got any suggestions. I've tried disabling the notebook firewall which does not solve things. When I took my notebook into the office after the weekend, I had all sorts of problems trying to get it to pick up the office network via an ethernet link. I've called the home domain the same as the office one, just in case you were wondering. Everything used to work fine, at home and in the office.

 

?

 

All advice gratefully received.

 

Brian

UK