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My new monitor turns on then goes blank after a few seconds.

After continuously turning my monitor on and off (this can't be good for it) for about three minutes it will finally show what's on the screen without going dark. If I leave it and the screen saver comes on it will do the same thing. Is this a power issue, hardware issue or possibly software issue?

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  • Frank Doll
    Frank Doll May 11, 2010

    Is your monitor a flat screen? CRT monitors somtimes have a power issue when going to sleep and awake etc... Most flat panels don't. Video cards must be seated correctly in their slot and the driver should be updated to the latest one. Just something to try without any info from you.

  • c r
    c r May 11, 2010

    what type pc, operating system? for how long has problem persisted? provide as much info as you can on the hardware. (belarc advisor is good to get hardware info). type belarc advisor into the search box.

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It sounds like a power issue OR weak signal. If you use an extension cable on your monitor cable this can couse the problem.

Posted on Dec 01, 2008

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Before you begin
Check the following items before using the steps in this document:
•If you have a flat panel LCD monitor, unplug the monitor power cable, wait about 30 seconds, reconnect the cable and then turn on the monitor. This resets the electronics on the monitor.
•Make sure the monitor has power - the light on the monitor is on. If the light on the monitor is off, the monitor does not have power. Connect it to a different power outlet.
•If the monitor has a detachable video cable, obtain a second monitor cable for testing purposes in case the cable is bad.
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With the devices disconnected, restart the computer. If the computer starts and the monitor now displays a picture, a device is preventing the computer from starting. Update the BIOS to resolve this issue.
Step 1: Connect the computer to another monitor
Connect another monitor to the computer to determine which device has the problem (the monitor or the computer). This step is very important to help you determine if the problem is coming from the computer or the monitor. If necessary, temporarily connect the computer to a friends monitor for troubleshooting purposes.
After the monitor is connected, turn on the computer and the monitor. What happens?
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•If the new monitor works , the original monitor or its cables are faulty. Do the following:
1.Replace the monitor power cable.
1.Turn on the monitor. If the monitor displays an image, you are done. If the monitor remains blank, continue using these steps.
1.Replace the video cable.
Turn on the monitor. If the monitor displays an image, you are done. If the monitor remains blank, continue using these steps.
1.If the monitor does not work after replacing the cables, replace or service the monitor.
Step 2: Is the video connection damaged?
Inspect the video cable and video connectors for damage. Check for sharp bends or breaks in the cable and bent or broken pins at the connectors. With the monitor and computer off, try to straighten bent pins with a small metal tube, like the tip of an empty mechanical pencil or the tip of a retracted pen.
Figure 1: Video connector
If you had to straighten any pins, reconnect the monitor making sure that the video cable is firmly connected and then turn on the computer and monitor. If the display is still blank, continue to the next step.
Step 3: Resetting and updating the BIOS
You can use these steps even though you will not be able to see anything on the monitor.
In case an item was changed in the BIOS, such as the primary display device setting, use the following steps to reset the BIOS back to its default configuration:
1.Turn on the computer and repeatedly press one of the following keyboard keys. Press the key about once every second for 5 seconds after turning the computer on.
◦For HP and Compaq computers that came with Windows 7 and Vista, press F10 .
◦For HP and Compaq computers that came with Windows XP, press F1 .
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1.Wait another 5 seconds.
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1.Press the F10 key. This saves the changes.
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1.If a BIOS update was not available or the monitor is still blank, continue to the next step.

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Hi,
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  • If the monitor has a detachable video cable, obtain a second monitor cable for testing purposes in case the cable is bad.
  • follw the another steps-
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