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      How to diagnose projector issues from Windows 7


      This article is an introduction to diagnosing projector issues

      Affected Brands

      All Idea Laptops

      Operating System

      • Windows 7
      • Windows XP


      The projector does not display an image

      1. Enable the external monitor on your notebook
      Projectors usually connect to the external monitor port, which must be enabled before sending any image to the projector.

         (1) Press and hold the “Fn” key (located in the lower left-hand corner of your keyboard), then press the “F3” key, which may be various from machines. (This combination of keys is known as "Fn+F3".) Each time you press the “Fn+F3” key combination, you will cycle your display through the following settings:


         (2) Wait a few seconds each time you press “Fn+F3” to let the projector refresh or "perfect" its image.

         (3) Cycle through the display settings using “Fn+F3” until you reach the setting you desire.

      2. "Waking up" the projector
      Some projectors have power-saving states similar to the computer sleep mode. Usually there is a button on the top of your projector to enable or disable this state. Consult your projector’s documentation if you need to "wake up" your projector.

      The projector image is cut off

      Usually this problem occurs when your notebook’s display properties are set to a resolution that your projector does not support. Similar to your notebook LCD display, your projector has an optimal resolution with which it works best. Consult your projector’s documentation to find this optimal resolution and set your computer’s display properties accordingly.

      Set the display properties on your notebook:

      1. For Windows 7, right-click a blank space on your desktop, click “Screen Resolution”, adjust the “Resolution” accordingly.
      2. For Windows XP, click “Start”, and then click “Control Panel”. Click “Appearance and Themes” and then click “Display”. Click the “Settings” tab. There will be a slider bar on the right side of the window. Use the slider bar to change your video resolution. Check your projector’s documentation to find its optimal resolution.

      The computer screen turns off

      Your computer probably has a built-in feature that turns off the screen after a period of inactivity to conserve your notebook’s battery power.

      Disable the power-saving feature that turns off your screen

      For Windows 7:

      1. Click “Start”, and then click “Control Panel”, view by “Small Icons”
      2. Click “Power Options”
      3. Click “Change plan settings” under “Select a power plan”.
      4. Set the “Turn off display” drop-down list to the settings you desire. For most presentations, you will want to change the settings to “Never”.
      Remember to change your settings back after your presentation or you may waste battery power unintentionally.

      Resetting the projector

      Resetting your projector will fix most other problems.

      1. Unplug the projector from your computer.
      2. After ten seconds, plug the projector back in.
      3. Set the display resolution on your computer to the projector’s optimal resolution (for more information, see the section of “Setting the display properties on your notebook” above). Your projector should work properly now.
      Your projector may have a slower refresh rate than your notebook LCD does. As a result, your projector may take longer to display the image than your notebook does.

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      • Alias ID: IN20111117-010
      • Document ID: HT062651
      • Last Updated :11 Oct 2016
      • © 2016 Lenovo