This seems to be asked a number of times and I've followed most of the suggestions but I still can't seem to be able to use Real View Graphics?

I am running Solidworks 2015 and my laptop spec is:

HP ZBook 15 Gen 2

Microsoft Windows 7 Professional 64 UK

Intel Core i7-4610M Dual Core

NVIDIA Quadro K610M Graphics

I followed this link (Graphics Card Drivers | SOLIDWORKS ) to check if this setup supports Real View graphics, which it does.

I have customized the toolbar to find the RealView icon, however it is 'greyed out' and cannot be turned on.

I have also made sure the 'Use software Open GL' option is unchecked and 'Use Large Assemblies Mode' is unchecked.

Does anyone have any suggestions as to why I can't use it?

Thanks