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My power source keeps switching from ac adapter to battery. Please help.

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Do you happen to have a loose power adapter? If it switches back and forth It could be a faulty power adapter.

Posted on Jul 10, 2010

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Hp pavillion lighitng bolt led on front keeps flashing and will not power on


I see that you said that you "powering on the AC adapter only".
Does that mean you tried booting with the battery removed?
If not, completely remove the battery and try to boot.
If that fails too, it will be a switch or board issue

Mar 12, 2013 | Computers & Internet

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Hp laptop dv4 2113tu charge light is blinking...


It could be adapter.take out the battery and plug in ac charger.if it switches on then it could be the main board is not charging the battery up.

Oct 27, 2012 | Computers & Internet

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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

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My toshiba laptop overheated and now it won't power on


Is the ac adapter, battery and power indicator light illuminated?if it is.

Try to unplug the ac adapter (charger), remove the battery(located on the bottom) and without the power sources (w/o battery and ac adapter), hold down na power button 10 secs. Put the power sources back and turn ON the laptop.

Feb 27, 2011 | Computers & Internet

1 Answer

I HAVE A ASPIRE 5520 IT WONT START THE FAN STARTS AND THE DVD BUT IT JUST KEEPS ON LOPPING


I had the same problem but what you can do is...

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.
  8. If its not the batery or AC adapter you might have to send it to Texas, just go to www.Acer.com

Jun 14, 2009 | Acer Aspire One PC Notebook

1 Answer

No response


First follow procedure to try to reset the power.
  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 23, 2009 | Acer Computers & Internet

1 Answer

Couldn't switch on my laptop;adapter light blinking !


Please take out the battery, and use the AC adapter to boot up only, then put the battery on.
If any abnormal situation occurs, please do a battery calibration as instructed in the manual. Adapter info:
Power problems with AC adapter
Step1 :

Please remove the battery first to verify the AC adapter's problem
Step2 :

Please check the power outlet on the wall by plug another device to the outlet
Step3 :

Please plug the adapter directly to the power outlet on the wall
Step4 :

Please make sure both the wires between the adapter to the wall and to the notebook are well plugged and the LED on the adapter is alight
Step5 :

Please check the power status indicator to make sure whether the notebook is powered on
Step6 :

Please make sure whether the CPU fan perform the testing run when the power is switched on
Step7 :

Please stick into the hardware reset button at the bottom of the machine and reboot
Step8 :

Please remove all of the removable hardware (exp. mouse, PCMCIA card, power adapter, battery, external drives, memory and etc) and install only the necessary components.
Step9 :

Please remove the AC adapter and re-install the battery
Step10 :

Please make sure whether the CPU fan perform the testing run when the power is switched on
Step11 :

If possible, please change another battery to make sure whether it's the battery's problem
Step12 :

Please check the power status indicator to make sure whether the notebook is powered on

May 04, 2009 | Computers & Internet

1 Answer

How to switch to battery power source on a compaq nx7010


If you have the AC adapter plugged into the portable, it will run on AC power while recharging the battery. Once you remove the AC adapter, it will go onto battery power.

If once you remove the AC adapter the computer dies, with a battery installed, then your battery is weak/dead or there is a connection problem, and the battery is not charging. But, I doubt this is the case, since it thinks the battery is at 80%. The system does not know if the battery is holding a charge.

You power settings are only timers, which reduce power consumption when idle.

Dec 01, 2008 | HP Compaq Business nx7010 Notebook

1 Answer

Power failure


Hi Asadi Hope you doing good. Please try the following solution : 1. Disconnect the power cable. 2. Take out the battery 3. Keep holding down the power button for 60 seconds. 4. Put the battery back in. 5. Connect the power adapter 6. Make sure the Power adapter is switched on and laptop is on AC Power 7. Wait for 5 minutes and try to restart the computer 8. If it still doesn't starts. 9. Hold down the power button for 60 seconds with AC adapter and battery connected 10. Try to restart now and check. 11. If it still doesn't switch on 12. Take out the battery and run on only Ac adapter and restart. Please advise if this still doesn't helps. Regards Harry

Jun 14, 2007 | Compaq Armada M700 Notebook

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