Looks like Microsoft removed support from Intel Express 4 laptop graphics with the new Windows 8.1 preview as all I was able to get was a standard video adaptor.
I lived with the crippled Intel Express 4 graphics support in Windows 8, as any attempt to run DRM videos failed with the hacked Windows 7 drivers available out there.
However, I tried again and Sky and NetFlix are definately working fine. (Although I'm not to worried about Sky having fallen out with them regarding Sky Go and thier decision to charge for it!)
Thanks to the guys at Eight Forums for the answer:
I wouldn't recommend removing the Test Mode logo - That looks like it is designed solely for Windows 8.