Right click desktop.
click Nvidia control panel.
Left hand side ,Display-change resolution
At the bottom -Customize
Bottom left - Create Custom resolution.
At the top enter 1440x900- 60 hz 32bit color depth and progressive.
At the bottom left is a small box with an arrow labeled Timing. Click this and the timings section will drop down.
It is automatically set to Automatic.
Try the different timing modes one at a time and then click test.
If the display looks good Click yes in the pop up box. If it is garbled or blank screen wait 15 seconds for windows to go back to the old settings.
Once you find one that is right and click ok windows may revert to 640x480 8bit. Which will look terrible.
Close out of control panel.
Right click on the desktop and click personalize.
On the left bottom click - display then on top left -change display settings.
Click the resolution box ,it will drop down the click on 1440x900.