Windows experience "page failed to load" XPS M1710

Just clean installed Vista ultimate on a Dell XPS M1710.

When I try and run Windows Experience (WinSAT) to update the rating after
installing NVidia video drivers; all I get is a blank window with "This Page
Failed To Load" written across the middle.

I have NEVER seen this problem before in much testing from Beta 1 onwards.
Is it a Dell M1710 problem, an NVidia problem or a Vista problem?

Anyone else seen it? Better still, know how to fix it?

Thanks
Nigel