No Display Issue

If the Display doesn't work, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs:

No POST or Video

If the POST or video doesn't display, perform the following actions one at a time to correct the problem.

  1. Make sure that the internal display is selected. On this notebook model, switching between the internal display and the external display is done by pressing Fn+F5. Reference Product pages for specific model procedures.
  2. Make sure the computer has power by checking at least one of the following occurs:
  • Fans start up
  • Status LEDs light up

If there is no power, see "Power On Issue" on page 128.

Drain any stored power by removing the power cable and battery and holding down the power button for 10 seconds. Reconnect the power and reboot the computer.

Connect an external monitor to the computer and switch between the internal display and the external display is by pressing Fn+F5 (on this model).

If the POST or video appears on the external display, see "LCD Failure" on page 131.

Disconnect power and all external devices including port replicators or docking stations. Remove any memory cards and CD/DVD discs. Restart the computer.

If the computer boots correctly, add the devices one by one until the failure point is discovered. Reseat the memory modules.

Remove the drives (see "Disassembly Process" on page 44).

If the Issue is still not resolved, see "Online Support Information" on page 197.

Abnormal Video Display

If video displays abnormally, perform the following actions one at a time to correct the problem.

  1. Reboot the computer.
  2. If permanent vertical/horizontal lines or dark spots display in the same location, the LCD is faulty and should be replaced. See "Disassembly Process" on page 44.
  3. If extensive pixel damage is present (different colored spots in the same locations on the screen), the LCD is faulty and should be replaced. See "Disassembly Process" on page 44.
  4. Adjust the brightness to its highest level. See the User Manual for instructions on adjusting settings. NOTE: Ensure that the computer is not running on battery alone as this may reduce display brightness.

If the display is too dim at the highest brightness setting, the LCD is faulty and should be replaced. See "Disassembly Process" on page 44.

  1. Check the display resolution is correctly configured:
  2. Minimize or close all Windows.
  3. If display size is only abnormal in an application, check the view settings and control/mouse wheel zoom feature in the application.
  4. If desktop display resolution is not normal, right-click on the desktop and select Personalized Display Settings.
  5. Click and drag the Resolution slider to the desired resolution.
  6. Click Apply and check the display. Readjust if necessary.
  7. Roll back the video driver to the previous version if updated.
  8. Remove and reinstall the video driver.
  9. Check the Device Manager to determine that:
  • The device is properly installed. There are no red Xs or yellow exclamation marks.
  • There are no device conflicts.
  • No hardware is listed under Other Devices.
  1. If the Issue is still not resolved, see "Online Support Information" on page 197.
  2. Run the Windows Memory Diagnostic from the operating system DVD and follow the onscreen prompts.
  3. If the Issue is still not resolved, see "Online Support Information" on page 197.
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Responses

  • iago sandheaver
    HOW TO REPAIR IF ACER ASPIRE 3640 HAS NO DISPLAY?
    7 years ago
  • charles smith
    How to repair acer aspiree 3640 has no display?
    7 years ago

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