WiFi not working after Bluetooth installation

I have a XPS M12010 with a 1500 Wireless Mini Card installed (running Vista). It has worked fine with my wireless router for a while now, but yesterday I installed the 350 bluetooth network card and now it doesnt connect to my router.

 

It works in that way that I se my wireless network and the signal strength is perfekt, but when I try to connect, it just won´t.

 

I have uninstalled the bluetooth software as well as the hardware, and I have done a System Restore to the point just before the bluetooth istallation. Still not working...

 

Some background information:

- Just before I installed the hardware windows had some updates installed and I didn't restart my computer. Instead I shut it off, installed the BT-hardware and turned it on.

 

- I have other computers connecting to the router so I´m sure it works.

 

- I have tried to disable/enable the device

 

- I have tried to disable/enable WPA on the router.

 

 

I hade looong talk with the technical support at dell yesterday, but they had never heard of it.

 

Does anyone know can be wrong ??