Eurocom Fox 4.0 Nvidia Optimus Problem

Hi,

I have a eurocom laptop with i7 3610QM and nvidia GT 650M graphic card.
The laptop has a "VGA" button for switching between HD 4000(button glows green) and GT 650M(button glows orange).

Since updating my nvidia drivers to the latest ones this button has become dysfunctional. It glows orange at all times and pressing it makes no difference. If i want to stick to IGP mode i need to go to "Control Panel\Hardware and Sound\Power Options" to select a different power plan and similar procedure when I want to run on the nvidia card.

When I try to install the stock VGA driver from the laptop CD it says "you have a newer version of the driver installed".

Can someone please help...

Thanks.