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My compaq laptop is not getting started. When i am conecting the charger the light is not display. May i know what will be the problem

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  • Compaq Master
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Check power adapter’s DC plug that connects into the laptop power socket with a multi-meter, the voltage should be slightly higher than the voltage that is printed on the label on the bottom of the adapter. If the voltage is zero or way below the voltage that is printed on the label then the power adapter is faulty and needs to be replaced.
If the adapter is OK then connect it to the laptop and power it up, then look at the power/battery charging LED light and wriggle the power plug in the laptop's power socket. If the power/battery LED light flashes and in a certain position this LED light stays firm, then the power socket is either faulty or it has a dry solder joint where it is connected to the motherboard.
This can be repaired but it requires the laptop to be completely dismantled to get at this power socket and repair. If you cannot DIY then I suggest you get a quote first.

Posted on Feb 03, 2010

  • geotester Aug 10, 2011

    Solve the problem of no power supply for Compaq Presario CQ71
    I was trouble by this problem twice: The Compaq Presaio HP AC adaptor cannot give power to the Notebook. The small light beside the socket is off.
    For the first time I broke the AC adapt, it seemed no burn happened. I got a new AC adapter from my IT support and it worked.
    For this second it is almost one year later. My IT support is on holiday. I tried many ways to fix the problem: take the battery away, short cut everthing (not battery) and thinking it will reset something (since the AC adaptor is an intelligent one. It shows 18.5V output, but when measure it, it gives a reading of 1 or 2 V in voltage output).
    All the measures did not work.
    Then I got some enlightment: 1) take off the battery and adaptor from the notebook, hold the notebook power button for 1 minute. 2) put on battery and connect AC adaptor, hold the notebook button for 1 minute again. You will see the blinking of the charger indicator LED on the from edge of the notebook. Then you will see the light beside the socket is ON! 3) release the power button and let the notebook charged for a while. Finally you can boot your Note book again.
    (give me a thank if it works for you geotester@hotmail.com)

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