stamina switch in windows 7

[chief_southmountain]

Hi,

I installed windows 7 on my Z21WN, but cannot get the stamina switch to work. Has anyone got a fix? Is there any drivers to download?

Cheers

[Blencogo]

What version of the nVidia graphics driver do you have installed?

I think you need to install the Sony provided nVidia driver 186.84 - this has extra software to allow switching.  The Windows 7 drivers do not have this.

Driver is 6th from the bottom here:

http://support.vaio.sony.eu/computing/vaio/downloads/updates/index.aspx?l=en_GB&m=VGN-Z21WN_B&os=10

You may have to use the nVidia Uninstaller first (right at the bottom of the page) then put the switch into Speed Mode and install the Driver.