To adjust your computer Screen Resolution, right mouse click on your desktop. This will display a new popup menu:
Select Properties from the popup menu.
This will open a new Display Properties window:
Using the Screen resolution scroller, the screen size of the computer can be adjusted. Different computers and monitors support different screen resolutions. Select the best resolution for your computer and then click OK.
You screen will now adjust and ask you if you would like to keep your current settings. Click Yes to save them or No to revert to the previous screen resolution.