Question about HP Compaq nx6310 Notebook

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Turns on and off and no display

I plug my adaptor into laptop, the power indicator turns on, then it turns off, the laptop starts for a few seconds and then it repets until I unplug the adaptor. No display during this process. What can it be the problem ?

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  • piscot1987 Feb 01, 2010

    I might not have explaing correctly.
    I plug the A/C adaptor, then the power led turns on, then the power led turns off, then the system starts up without image for a few seconds then it turns off. Then all these things repeat until I unplug the A/C adaptor.

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There is short circuit in motherboard if your adater have small led and if LED off when you inseting power jack that means short circuit in dc to dc controller or VRM section on your motherboard

Posted on Feb 01, 2010

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1 Answer

HP Pro4730s won't start


Hello arielconda,

This sounds like a problem with either:

1. The power supply in the laptop where the adaptor plugs into

2. a bad power adaptor.

If it is #2, try running on only battery power and see if it will come on. If it is #1, the motherboard will need to be replaced.

I hope that helps and good luck!
cf122d1a-fe84-4e15-8ade-8265b952ff1b.jpg 1284ec34-d9a8-4920-a4ff-3850b44b8dbd.png

Jan 30, 2014 | Computers & Internet

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My samsung n150 mini, was working very well.suddenly, the screen turns into black and no sound of the processor. Screen and battery flashlight indicates that they dont work.what is happening?


Does the laptop start up with power adaptor plugged in?
If yes then battery may be dead, you can check for a replacement online, battery model may be AA-PB2VC6B but check the battery label to ensure you note the correct battery model.


If the laptop does not boot with the power adaptor inserted, remove the battery and try booting with just power supply inserted and see if laptop boots.


If still not booting then it is a hardware fault, either battery, power adaptor or internal part possibly motherboard, you will have to contact Samsung for repair.


Good Luck

Jan 10, 2013 | Computers & Internet

1 Answer

When I start my M70-192 lap top , it does not work and the fan operates for few seconds and stops . also the the power indication LED operates for second and turns off .nothing is displayed on the screen...


Remove the main battery and try again, if no change! the DC jack in the laptop is a common source of trouble and must be dismantled down to the motherboard level to address, bad solder connections are common under the plug, I recommend you have it fully assessed before repair.

Apr 16, 2012 | Toshiba Satellite PC Notebook

1 Answer

Cannot turn on my laptop only the start button light turns on but no screen display and a few noises help


This is only the first of many things you may need to do to determine the fault. But it is a process for determining the exact cause.


Make sure the ac adapter is correctly plugged into the notebook and into the power cord.


If everything is plugged in correctly and it still will not power on, follow these steps to complete a 'power reset' of the notebook.

  1. Unplug the ac adapter. Keep ac adapter unplugged.
  2. Remove the battery and keep the battery unplugged.
  3. Hold the power button down for 15-20 seconds. (Nothing will appear on the display and none of the lights will light up.)
  4. Release the power button and plug in the ac adapter ONLY. (Please note that a power indicator light should be lit on the ac adapter when it is plugged in).
  5. Normally power on the notebook.
  6. If the unit does not power on, remove the ac adapter and insert the battery into the system.
  7. Plug the ac adapter back into the system, the battery charging indicator light will light up.
    If the battery charging indicator light does not light up, the ac adapter may not be providing proper power to the unit, and may need to be replaced.

May 15, 2011 | Acer Aspire 5500 5570-2609 Laptop

1 Answer

Every time I turn it on, it displays nothing, just a black screen.But the power indicator is on and there are some white lights flashing next on the Caps lock button and above the scroll button..


Dead (ish) Laptop.

Press the power button momentarily to check if it is hibernating or in stand by. If this doesn't work;

Try firstly removing the laptop's battery as it may be at a critical voltage and the system will not start because of it. Plug in your ac adaptor and monitor what happens. Does the power light illuminate? If it does it should then boot up, if it doesn't, try a known good ac adaptor before going any further.
If the adaptor is fine and the laptop still won't start, then you may have a mother board fault and should contact a dealer/repairer for further advice.
Hope this helps.

Feb 04, 2011 | Computers & Internet

1 Answer

Turns off after few seconds with batery or with the power cord only. never turn on the monitor, just fans sound for 5 seconds and stop rotate and the start blue botton light remains on.


Check the battery is charged first and that power is getting to the laptop by the DC Jack. You can test this by setting a multimeter to 20V DC and touching one probe to the inner part of the DC jack and the other probe to the Outer (earth) of the DC jack (red to inner black to outer). I'm assuming the fuse in the plug of the adaptor is ok...

If there is power getting to the DC jack, check the connection to the DC jack socket on the motherboard, if it feels sloppy or loose, this is where the problem may be.

If the fit is tight and the AC adaptor is supplying power, you could have a ram issue. Romove each ram module in turn and try to see if the laptop boots then, if one stops it booting, it needs replaced.

Failing this, you could have a fault on the motherboard which will need technical investigation

Jan 02, 2011 | Computers & Internet

2 Answers

My lenovo 3000 G410 when ia tr to start it nothing happens???? help


Hi,

Is there power when you turn the system On?

In your case it is very difficult to find out which is causing the system not to power, this can be multiple devices on your ssytem.

trying to eliminate one device after another try following the steps below:

>remove the Battery from the system, unhook the adaptor as well then Press and Hold down the power button for 7-10 seconds to drain any power on your motherboard.

>after power draining the system connect the adaptor to your laptop, do not insert the battery yet, Power the system without the battery, if the system turns on leave it turned on for about a minute then shut it down normally.

>insert the battery to the laptop turn the system on if this turns on without any error then your concern is probably ok and fixed.

>but if the system still does not power up having the battery connected to the machine a device on your system can or maybe damaged either the Battery or the Motherboard having an issue with the battery conencted to the machine...

if your system is in warranty call Lenovo and have it sent to teh service center for proper checking and repairs.

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1 Answer

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The inverter inside the lcd panel is most likely your problem. Try removing the whole lcd screen from the laptop if you are capable and run it with the external screen to confirm. leave the lcd switch off (this lcd switch above the power button turns the lcd inverter on and off)

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1 Answer

I have a toshiba laptop, and in the last few weeks something weird started happening. When the laptop is plugged into the AC, the power meter in windows tells me that the power source is still batteries,...


Change your AC charger.
It's NOT charging "When the laptop is plugged into the AC, the power meter in windows tells me that the power source is still batteries, and the battery level drops by about 1% every few hours"
That's the reason why: "battery has completely died"
If you do not change it you'll continue to "still it gives me the same low battery indication and will not turn on. "


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1 Answer

Help


sounds like you have an intermittent problem with your AC adaptor or dc input jack. Does the light on the AC adaptor light up when you plug it in? If it does then your dc input jack may be faulty. If the light on the ac adaptor does not light then replace the ac adaptor. Good Luck!

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