Common Problems

Use the following procedure as a guide for computer problems.

NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses.

  1. Obtain the failing symptoms in as much detail as possible.
  2. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the same operation.
  3. Use the following table with the verified symptom to determine which page to go to.

Symptoms (Verified)

Go To

Power On Issue

Page 120

No Display Issue

Page 121

LCD Failure

Page 123

Internal Keyboard Failure

Page 123

TouchPad Failure

Page 124

Internal Speaker Failure

Page 125

Internal Microphone Failure

Page 127

Rightside USB Failure

Page 129

Wireless Function Failure

Page 130

3G Function Failure

Page 131

Switch Failure

Page 132

Thermal Units Failure

Page 133

Power Button Failure

Page 133

External Mouse Failure

Page 134

Other Functions Failure

Page 134

Intermittent Failures

Page 135

Undermined Failures

Page 135

4. If the Issue is still not resolved, see "Online Support Information" on page 207.

Power On Issue

Workflow Diagram With Decisions

Computer Shuts down Intermittently

If the system powers off at intervals, perform the following actions one at a time to correct the problem.

  1. Check the power cable is properly connected to the computer and the electrical outlet.
  2. Remove any extension cables between the computer and the outlet.
  3. Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly into a known good electrical outlet.
  4. Remove all external and non-essential hardware connected to the computer that are not necessary to boot the computer to the failure point.
  5. Remove any recently installed software.
  6. If the Issue is still not resolved, see "Online Support Information" on page 207.

No Display Issue

Aspire 4736z Display

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 120.

  1. 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.
  2. 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 123.

5. 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.

  1. Reseat the memory modules.
  2. Remove the drives (see "Disassembly Process" on page 38).
  3. If the Issue is still not resolved, see "Online Support Information" on page 207.

Abnormal Video Display

  1. 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 38.
  2. 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 38.
  3. 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 38.

  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 207.
  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 207.

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Responses

  • Diego Sinning
    Hi, I am having a "Power On Issue". I tried the BIOS Recovery procedure, but when I was in the middle of it, the screen went blank, I panicked and removed the battery. long story short, the computer is dead now. no signs of life at all. It does not boot, no fan sound, not even the power indicator light comes on. Is there any solution to my predicament ? the motherboard died for what I did? Do I have to replace the motherboard? I appreciate your kind response. Diego Sinning
    9 years ago
  • Barry
    Looking for battery light blinking orange. Usually orange then green when charged. Now orange then starts blinking.
    9 years ago

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