Solved: games not running in FULL screen

Hi

Just wanted to post these details as some have been experiencing similar issues with games running reduced width on dell xps (and other) notebooks.
I spent some time working through many suggestions until I found something that would work on my configuration.

System spec:

Brand new a week out of the factory!
Dell XPS 15 L502x (Windows 7 / geforce 525M / i7 / Std. Display (1366 * 768)

Problem description:

Games not using the full width of the laptop display.
Instead getting wide black bars one either side of the main games window.
Same games run fine on other widescreen systems.
Changing internal game settings and adjusting screen settings through Nvidia Control Panel did not fix problem.
Latest DELL Drivers up to date and appear properly installed and configured.

What I did to remedy this issue:

Some have resolved this issue in similar configurations by accessing changing image scaling options.
Usually these are accessed through the Nvidia Control Panel.
However "Adjust desktop size and position OPTION was missing from my nvidia control panel"
The reason is that the inbuilt i7 Intel GPU appears to maintain overall control of the screen scale.
So the only access is through the Intel graphics and media control panel.

Some have suggested trying to disable the inbuilt Intel GPU in favour of using the Nvidia (or ATI) Control Panel to do all the settings.
However as has already been established in other posts, you cannot disable the inbuilt Intel graphics, nor is this desirable or practical.

Therefore both the Intel GPU and in my case the geforce 525M are used by the systems various games and applications and this determination is made by the system at time of execution.
Incidentally you can override and manually specify for each program which of these GPU's are used (Under manage 3d settings in Nvidia Control Panel).
But this in itself wont resolve the reduced screen issue.

I finally resolved the scaling by changing the resolution in the Intel GPU settings.
(Intel Graphics and Media Control Panel).
Right Click on desktop -> Graphics Properties -> Select Advanced Mode
then change resolution from 1366 * 768 (native) TO 1360 * 768.
Ignore warnings about non-native mode
(you can hide the notification from Windows 7 taskbar through taskbar properties).
Apply the non native setting.
Now your games should run fine in full screen.
It worked in my case.