You can change the screen resolution by following these steps:
1. Call up your desktop display.
2. Right-click a blank part of the display. Drop-down menu appears.
3. Select Screen Resolution from the menu.
4. Screen Resolution window appears.
5. To change the screen resolution, click the Resolution drop-down list and use your mouse arrow to drag the little bar between High and Low.
6. Use the Windows-recommended setting if possible.
7. View the display changes by clicking Apply, then click Keep Changes to authorize the change.
8. When you've finished tweaking the display, click OK.