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How to connect to external monitor?

Hi all. I turned on my monitor, heard a 'boom' sound, and the monitor went black. Tried pressing the off button and turning it on again, didn't work. Is this probably a problem with the monitor?

Rather than spending money on repairing the monitor, I'm thinking of buying a cheap external monitor. Any recommendations?

Also how do I hook it up (since the laptop monitor is dead)?

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  • spectrumvoid Mar 02, 2009

    I don't have a multilmeter, but the sound came from the laptop monitor. The LED lights up (the yellowish-green ones). I hear some whirring noises when I hit the power button. It doesn't sound 'normal', the fan seems to be a bit louder than normal but I'm not really sure because I didn't pay attention when the laptop was functioning.



    Thanks very much.



  • spectrumvoid Mar 02, 2009

    I forgot to add: my laptop is a compaq presario V2000.

  • spectrumvoid Mar 02, 2009

    ok got it. Thanks!

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  • Compaq Master
  • 32,281 Answers

You need to determine the fault first.
Can you determine exactly where the boom came from (the adapter or laptop)?
When you turn on your laptop does the LED lights indicating that there is power to the laptop and you can hear the hard drive spinning as well as the fan?
Do you know the power adapter is OK (you can test it with a multimeter)?
If the laptop is dead then the external monitor is of no use.

The laptop normally has a blue video output connector, usually on the back edge of the laptop where you can connect an external monitor or a data projector. When a monitor or projector is powered up first and then the laptop the display goes to the external video first. You can switch between the laptop screen and external video by clicking the blue Fn + F4 function keys.


Posted on Mar 02, 2009

  • Chris Hingee
    Chris Hingee Mar 02, 2009

    If the LEDs are showing then you have power from the adapter, so you don't need to test it.

    The next step is to borrow a monitor to see if you can get a display on the monitor.

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This issue could be due to presence of static charges or internal hardware malfunction of the notebook. To isolate the exact cause of the issue, perform the steps provided below.

Step 1: Hard Reset

To perform a hard reset, please follow the steps listed below:

1. Unplug the AC adapter from the notebook PC and remove from any port replicator or docking station.
2. Remove the battery from the notebook battery compartment.
3. Press and hold down the power button for about 20 seconds.
4. Insert the battery and plug the AC adapter back into the notebook PC.
5. Press the power button to turn the notebook PC back on.


This will discharge the static charges from the notebook. Now turn on the notebook and check for the issue. If the issue persists, then remove and reseat the memory modules of the notebook and check for the issue.

Step 2: Remove and Reseat the Memory Modules

You can refer the service manual provided below for information to remove and reseat the memory modules of the notebook.

http://h10032.www1.hp.com/ctg/Manual/c01602064.pdf

Refer page no: 52 & 53
NOTE: PDF manuals require the Adobe Acrobat Reader for viewing and printing.
Further, if the issue persists after performing the above steps, then the issue could be due to hardware malfunction of the video card or defective LCD display screen of the notebook. Hence, I recommend you to connect an external monitor to the notebook and then check whether the display works fine on external monitor or not.

Step 3: External Monitor

You can follow the steps listed below to connect an external monitor to the notebook.

1. Turn off the notebook.
2. Connect the monitor cable from the external monitor to the monitor port on the rear of the computer.
3. Connect the monitor to a power source and turn it on.
4. Press the Power button to turn on the computer.

At this time, please follow the instructions mentioned below for switching the display to the external monitor:

The notebook's video card supports three modes. Built-in screen only; external video only; and both on simultaneously (mirrored). If you're not seeing the image on the desired device(s), the notebook's video card is probably in another mode. Press FN + F4 to cycle through the display options: Notebook display, External monitor, both.

If you press FN + F4 once, the external monitor will display & there will be no Notebook LCD display.
If you press FN + F4 twice, the external monitor will display & there will be some shading on the Notebook LCD.
If you press FN + F4 thrice, both Notebook LCD & external monitor will display.

If the issue persists on the external monitor, then this could be due to defective video card on the notebook. However, if the display on the external monitor is fine, then the issue is with the LCD display panel of the notebook. In either cases, the notebook requires a detailed onsite diagnosis by a service technician.

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My hp dv4-1435dx screen is blank.It was on then it froze and then went blank. I have tried to fix it by removing the battery and replacing it a number of times. It comes on when started and plays the...


This could be due to presence of static charges on the notebook or hardware malfunction of the video card or defective LCD display screen of the notebook. To resolve the issue, perform the following steps.
Step 1: Hard Reset
To perform a hard reset, please follow the steps listed below:

1. Unplug the AC adapter from the notebook PC and remove from any port replicator or docking station.
2. Remove the battery from the notebook battery compartment.
3. Press and hold down the power button for about 20 seconds.
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At this time, please follow the instructions mentioned below for switching the display to the external monitor:

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If you press FN + F4 twice, the external monitor will display & there will be some shading on the Notebook LCD.
If you press FN + F4 thrice, both Notebook LCD & external monitor will display.

If the issue persists on the external monitor, then this could be due to defective video card on the notebook. However, if the display on the external monitor is fine, then the issue is with the LCD display panel of the notebook. In either cases, the notebook requires a detailed onsite diagnosis by a service technician.

If your notebook is under HP warranty, then contact HP to get the notebook repaired for free of cost.

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http://support.dell.com/support/edocs/systems/latd505/sm/display.htm#1052500

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