How to change your computer’s screen resolution ?

Change Your Computer’s Screen Resolution

• Right click on desktop and select "Properties".
• In Display Properties" window, Go to Settings tab.
• Move the slider in the bottom-left corner of the window to change your computer’s screen resolution:
  (left for lower resolution, right for higher resolution.)
• Press "Apply" and see the effect.
• A dialog box will pop up after your screen adjusts itself. If everything’s OK, press "Yes".