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Laptop will not stay switched on, even when connected to power cable

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  • better-swiss May 11, 2010

    scuba,



    Does this happen after a period of inactivity or while you are using it ? Have you set the Power Options in Control Panel



    How old is the laptop ?



    Have you tried removing the battery and just using the power cable ?



    better-swiss



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That sounds as if the processor is overheating start it in bios and monitor it the cpu temp and fan speed if there are severe fluc. replace the fan and or cpu check the power supply first as it may be defective and cutting off due to coil overheating

Posted on Dec 21, 2008

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I have a Yamaha Rx -V465 AV receiver When turn the system on it will not stay on. I switch outlets it would do the same.


First disconnect all speaker cables and all input cables (optical, HDMI, everything expect power). If receiver powers off itself immediately even without anything connected, it is faulty and you need to send it for repair.

If it works without cables, then you probably have bad cables and/or short-circuit in the speaker connection and receiver is turning off to prevent damage. Double-check your connection and that no speaker "+" cable has a contact with any "-" cable or connector. Even one little strand of cable touching the opposite polarity connecter is enough to cause a short-circuit.

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1. Disconnect anything that is connected to your laptop. Usb Flash discs, External HDDs, Wireless Devices using dongles etc.
2. Make sure that your device does not receive any power i.e. Disconnect your ac cable, and remove battery from your laptop.
3. Hold down the power button for 5 seconds. This would drain remaining power from your laptop. But as the power cable and the battery are disconnected, you should not expect anything to happen.
4. Identify where your RAM is located under your laptop. Unscrew the cover off, then remove the RAM from your laptop. Replace the cover temporarily.
5. Flip over your laptop. Connect your power cable to the laptop, NOT THE BATTERY NEH! Then press the power button. Sometimes your laptop will make long beeps to let you know the RAM is not inserted in your laptop. But nothing will happen on your monitor because it needs RAM to show you something.
6. After those beeps, remove the power cable. Press the Power Button to drain remaining power on your laptop. Flip the Laptop and replace the RAM you have removed earlier.
7. Insert your power cable and try restarting your laptop and see what happens. I am sure by now you should have some response on your laptop monitor.

NB: While performing the above mentioned, remember PC or Laptop parts are delicate. Even static electricity can damage them. Thus before handling your laptop components, make sure you touch the wall or any large metal subject from time to time to discharge the static. Wear 100% cotton cloths as you are working on it. Bare feet even better to discharge the static

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Please elaborate on this issue. Under what circumstances does the power stay on? When the power cable is connected or when on battery? If it is powering off as soon as you remove the power cable, then the issue is your battery doesn't hold a charge. If the laptop dies with the battery and power cable connected then it might be getting just enough charge from the battery to power on for a moment and then it runs out of "juice" again. That is normally caused by a bad DC jack (The part in the laptop that the power cable plugs into). Test the end of the power cable with a multi-meter to make sure you are getting the correct voltage listed on the power brick (the box in the middle of the power cable). Let me know your results.

Matt

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Tried to charge laptop light comes on but laptop will not switch on


Try to remove the battery from the laptop and turn it on with the power cable connected.

If the power leds are turning on but nothing comes up on your computer, not even the BIOS, your motherboard may be damaged.

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remove all external peripherals. remove laptop battery. remove ac adapter.
plug ac adapter to wall power socket without the laptop connected check if the ac adapter led will stays on. if yes then connect it to the laptop and check if the ac adapter led turns off. if yes motherboard laptop has problems and need to be replaced.
if ac adapter led stays off without connecting laptop, try different wall power socket, if still ac adapter led is off then replace the ac adapter.
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I understand that while the laptop is connected to the power supply it's ok, and while it boots up, even with the cord disconnected, it stays on but only briefly, but after a while, it shuts itself down?
If this is so, it would appear that your battery is dead and needs replacing. Your laptop will still work, as long as it's connected to its power supply. It should even work with the battery removed, provided it's plugged into the adapter.

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Hi, I don't think the problem is with your monitor. Your monitor sounds like it's doing exactly what it's supposed to do. The monitor is supposed to turn off if there's no cable attached, which means there's no signal input. When the screen goes black, does the power light stay on and turn orange? or does it go off as well? I would recommend that you lower your screen resolution to 1280x1024 or lower in the Display Properties window, then remove your primary monitor, and connect the monitor to your desktop computer. You should see it light up when connected. The monitor auto-senses when there's a computer attached to the cable and when there's a signal. If it doesn't see a signal, it goes black to save power.

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I have a similar problem. The laptop switches into battery mode irregularry, even if no battery is inside. It runs stable with power cord connected for some minutes or hours, but sometimes switches off with no warning.
I have taken a new power cable, but still the same problem. The battery is broken, it only lasts some minutes.

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