processor not capable running widi

Hello,

I have a Dell Inspiron 1720 running Windows 7-64 with :

- Intel Ivy Bridge I7 3630QM

- Intel 4000 integrated graphic card

- Intel Centrino Advanced N 6250 AGN wireless.

There is also a NVidia GeForce GT650M graphic card that is desactivated.

That configuation is supposed to be WiDi compatible.

I first installed WiDi 4.2.29.0 but it didn't work correctly : it recognized the TV compatible WiDi adaptor but never succeeded in getting an Ip address.

So I uninstalled WiDi and tried to reinstall it and got the "Platform not compatible" error message.

I tried several times and always got the same error.

When I run the Intel WiDi compatiblity tool, I get the message "Your processor is not capable of running Intel Widi Technology".

What is the problem ? and the solution ?

Thanks for your help.

Pascal