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Laptop power failure

My laptop all of a sudden cuts off completely as if it has been unplugged, sometimes it happens within minutes of turning on, other times it lasts for hours before it dies

Posted by helixmh on

  • 3 more comments 
  • linkon Apr 17, 2008

    my lap top (a gateway bought through the hsn) over the last few weeks suddenly looses all power. sometimes it wont restart unless I remove the battery for a few minutes along with plugging it out from the wall outlet. I cant seem to associate these episodes with any particular action and can't predict when it will occur.

  • Anonymous Jun 11, 2008

    Sometimes my laptop's battery is not being charged.

  • mcigi Jul 05, 2008

    I have same prob with my M6R Asus, heard them being known for overheating. Mine keeps shutting down unawares so I have just taken it apart and vacuumed the fan. Then I also put new thermal compound between heat-sink /cooper flat wire/ and cpu.

    None of it helped. I turned it on and started working....then it showed black screen with ISO in left top corner ... but this happened for the first time. I switched it off and on .... started working but lasted for like 5 seconds and than again...shut down...and again....Don´t know what to do.

    Maybe it is overheating of graphics but really just guessing, please reply someone if any suggestion.

    Mike C

  • gnsjeff Jan 23, 2009

    I have an acer 5315 that will suddenly just turn completely off, even when the battery is fully charged. I've worked a little with the diagnostic software that comes with the computer but am not able to make use of the it. It seems to happen more when I use the sleep mode when not using it vs doing a complete shutdown. Very irritating problem as it will work fine sometimes for several days and then all the sudden Bam, total power failure. When it is turned back on it gives the option to boot in safe mode but I have all ways selected to boot up normal..

  • DANA BAKER Feb 15, 2009

    MY LAPTOP WONT START UP AT ALL. I UNPLUGGED IT TO MOVE TO ANOTHER ROOM AND NOW NO LIGHTS OR ANYTHING. I DISCONNECTED PART OF THE POWER SUPPLY EXCEPT FOR THE BOX AND I WAS ABLE TO POWER UP MY PS2 SO I DON'T THINK ITS THE CORD ALTHOUGH NOT SURE WHAT THE BOX THAT CONNECTS THE CORD TOGETHER IS DOING

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Hi,
Is the battery holding a charge? If the battery's no good, then I'm thinking the power adapter plug in has loosened from the motherboard, not completely, but enough so if moved just right, power is lost.
If the battery IS good, then you need to vacuum or blow out the fan/heatsink vents. It would be best, if this is the problem, to have it cleaned by someone with experience.
Let me know about if the battery is charging or not.
Good luck

Posted on Nov 30, 2007

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Netbook Screen Turns to White Noise after Turning on within 1 Minute

Could be a problem with the flat cable (the connection from video to motherboard) but since your screen starts to fail after a little time could be a problem with the integrated Intel GPU too.
If your model has the second GPU (Like Nvidia Ion) try to disable it and see what happen.
A good test is to turn on you netbook and leave it on Bios settings page to see if the issue is software related or not.
Another test is to hook an external monitor (if you have a VGA or HDMI port available) and see if the GPU is ok.
If the problem is the flat cable you can try to replace it but if you have a faulty GPU and you are out of warranty you need th replace the entire motherboard because normally GPU is part of the chipset and can't be replaced.
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AC Adapter issues Q & A.

<p><b>Laptop switching to battery while connected to AC adapter</b><br /> <p><b>Q.</b> While turned on, the laptop will switch to battery power even if connected with the AC adaptor (sometimes during boot-up, or after a while) until the battery drains out, he then goes to hibernation (the battery light is off). If no battery in the laptop, it will shut down, and the AC light will blink very fast. The battery (li-ion) will only charge up to 10%, where it then jumps right up to 100%, and will discharge from 100% to 90% then jump to 0%, go to hibernation, and fails to complete the process, shutting down. The adaptor makes a small "camera flash charging" sound, stabilizing at 19v. When charging, it repeatedly makes the "charging sound" Faulty AC adaptor? Or Faulty battery? Or Both?<br /> <p><b>A. </b>First problem: The laptop switches to battery power even with connected AC adapter. Most likely you have a faulty power jack. It's either broken or loose. It's a known issue with laptops and you can fix it by replacing/resoldering the power jack or relocating it outside laptop case.<br /> <p>It also could be a problem with the power cord. Find a multimeter and check the AC adapter. See if the power cuts off when you jiggle the power cord. If it does, replace the adapter.<br /> <p>Second problem: The battery will discharge from 100% to 90% and then jump to 0%. It sounds like a bad battery.<br /> <p><b>Battery charging light is on even when power adapter is unplugged and laptop is stitched off</b><br /> <p><b>Q.</b>The yellow light for battery charging does not go even after switching the laptop off and power jack is disconnected. Battery does not charge at all with power source connected. <br /> <p><b>A.</b> First of all, try reconnection the battery if you haven't done it already.<br />The battery plugs directly into the connector attached to the motherboard. If the battery charging light stay on even when the power adapter is unplugged and the laptop is switched off, it's either bad battery or something is wrong with the motherboard. The only way to find the culprit is testing the laptop with another known good battery.<br /> <p>Also, you can try this. Remove the battery and plug in the power adapter. If the battery charging LED lights up even when the battery is removed, most likely you have a problem with the motherboard.<br /> <p><b>Battery charges only when the laptop is off</b><br /> <p><b>Q.</b> Bought a Laptop without AC Adapter. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery.<br /> <p><b>A.</b> This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you'll have to find an adapter which provides 4.74A or MORE. <br /> <p><b>While using AC adapter alone or battery alone, laptop works. While using them together, I am getting a problem.</b><br /> <p><b>Q.</b> While using AC adapter alone or battery alone, laptop works. However while using them together, laptop LED lights blinks and the power meter for battery drops down immediately to 0% critical level, whereas the battery LED indicator says it's full. I tried to unplug the AC adaptor while it went down to 0%, then the power meter for the battery came back to normal 85%.<br /> <p><b>A.</b> There could be a few different reasons why it happens:<br />1. It might be an issue with the BIOS. Make sure the laptop has the latest version of BIOS installed, update it if needed.<br />2. It might be a software related issue. If you have some kind of power management utility installed try uninstalling it and use Windows power management utility instead. Also I would try reinstalling the operating system if upgrading the BIOS or removing the power management utility does not help.<br />3. If you still experience the same problem even after upgrading the BIOS and reinstalling Windows, most likely you have a problem with the motherboard. Apparently the charging circuit is not working properly. I assume it's not a problem with the battery. You'll have to check the motherboard in this case. <br /> <p><b>Problem with my battery. 100% to about 40% the battery discharging normally then suddenly from 40% it drop directly to 2%.</b><br /> <p><b>Q.</b> When I use only on battery, from 100% to about 40% the battery discharging normally (last about 1 hour) then suddenly from 40% it drop directly to 2%.<br />When I plug the AC cord, it won't directly charge (the charge LED is still not on). After 10 to 20 minutes it then starts to charge the battery (the indicator say that it can be charged to 100%).<br />If I turn-off the laptop and then charge the battery, it won't also directly charge but the delay is much shorter (maybe just about 1-2 minutes).<br />Is this the sign of a bad battery (when hot it can't be charged?) or maybe a bad AC adapter (not enough power to charge the battery when the laptop is turned on?)<br />Note that this symptom is always repeating when I use the laptop.<br /> <p><b>A.</b> From the first part of your complaint description I can see that you have a bad battery. The percentage might vary, but the process of discharging is the same - the battery discharges fine until some point and then the remaining charge suddenly drops to the minimum. You'll have to replace the battery.<br />I'm not sure about the second part. Probably it's a battery related problem too. Just in case check if there is a newer version of BIOS available for your laptop. If you find one, upgrade the BIOS. <br /> <p><b>The battery is 100% charged but it will die within a few minutes as soon as the laptop is unplugged.</b><br /> <p><b>Q.</b> When I unplug the power it will run off the battery, the battery icon says it is 100% charged and I have 2+ hrs remaining, but within a few minutes I get the "critical battery level" message and it will die. When I plug it back into AC power the battery charge light comes on (and will remain on for over a hour), but I will have the same problem with it dying as soon as it is unplugged. Do I need a new battery?<br /> <p><b>A.</b> It looks like you have a bad battery. Here are some behaviors typical for a dying laptop battery:<br />1. The battery charges normally (according to the battery icon) but as soon as you unplug the laptop, it dies almost momentarily.<br />2. The battery charges normally. When you unplug the laptop, it discharges normally until some point and after that point starts discharging very fast. For example it might take 10-15 minutes to discharge from 100% to 80% and then it discharges from 80% to 0 for 2-3 minutes. <br />
on Mar 15, 2011 • Computers & Internet
tip

AC Adapter issues Q & A.

<p><b>Laptop switching to battery while connected to AC adapter</b><br /> <p><b>Q.</b> While turned on, the laptop will switch to battery power even if connected with the AC adaptor (sometimes during boot-up, or after a while) until the battery drains out, he then goes to hibernation (the battery light is off). If no battery in the laptop, it will shut down, and the AC light will blink very fast. The battery (li-ion) will only charge up to 10%, where it then jumps right up to 100%, and will discharge from 100% to 90% then jump to 0%, go to hibernation, and fails to complete the process, shutting down. The adaptor makes a small "camera flash charging" sound, stabilizing at 19v. When charging, it repeatedly makes the "charging sound" Faulty AC adaptor? Or Faulty battery? Or Both?<br /> <p><b>A. </b>First problem: The laptop switches to battery power even with connected AC adapter. Most likely you have a faulty power jack. It's either broken or loose. It's a known issue with laptops and you can fix it by replacing/resoldering the power jack or relocating it outside laptop case.<br /> <p>It also could be a problem with the power cord. Find a multimeter and check the AC adapter. See if the power cuts off when you jiggle the power cord. If it does, replace the adapter.<br /> <p>Second problem: The battery will discharge from 100% to 90% and then jump to 0%. It sounds like a bad battery.<br /> <p><b>Battery charging light is on even when power adapter is unplugged and laptop is stitched off</b><br /> <p><b>Q.</b>The yellow light for battery charging does not go even after switching the laptop off and power jack is disconnected. Battery does not charge at all with power source connected. <br /> <p><b>A.</b> First of all, try reconnection the battery if you haven't done it already.<br />The battery plugs directly into the connector attached to the motherboard. If the battery charging light stay on even when the power adapter is unplugged and the laptop is switched off, it's either bad battery or something is wrong with the motherboard. The only way to find the culprit is testing the laptop with another known good battery.<br /> <p>Also, you can try this. Remove the battery and plug in the power adapter. If the battery charging LED lights up even when the battery is removed, most likely you have a problem with the motherboard.<br /> <p><b>Battery charges only when the laptop is off</b><br /> <p><b>Q.</b> Bought a Laptop without AC Adapter. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery.<br /> <p><b>A.</b> This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you'll have to find an adapter which provides 4.74A or MORE. <br /> <p><b>While using AC adapter alone or battery alone, laptop works. While using them together, I am getting a problem.</b><br /> <p><b>Q.</b> While using AC adapter alone or battery alone, laptop works. However while using them together, laptop LED lights blinks and the power meter for battery drops down immediately to 0% critical level, whereas the battery LED indicator says it's full. I tried to unplug the AC adaptor while it went down to 0%, then the power meter for the battery came back to normal 85%.<br /> <p><b>A.</b> There could be a few different reasons why it happens:<br />1. It might be an issue with the BIOS. Make sure the laptop has the latest version of BIOS installed, update it if needed.<br />2. It might be a software related issue. If you have some kind of power management utility installed try uninstalling it and use Windows power management utility instead. Also I would try reinstalling the operating system if upgrading the BIOS or removing the power management utility does not help.<br />3. If you still experience the same problem even after upgrading the BIOS and reinstalling Windows, most likely you have a problem with the motherboard. Apparently the charging circuit is not working properly. I assume it's not a problem with the battery. You'll have to check the motherboard in this case. <br /> <p><b>Problem with my battery. 100% to about 40% the battery discharging normally then suddenly from 40% it drop directly to 2%.</b><br /> <p><b>Q.</b> When I use only on battery, from 100% to about 40% the battery discharging normally (last about 1 hour) then suddenly from 40% it drop directly to 2%.<br />When I plug the AC cord, it won't directly charge (the charge LED is still not on). After 10 to 20 minutes it then starts to charge the battery (the indicator say that it can be charged to 100%).<br />If I turn-off the laptop and then charge the battery, it won't also directly charge but the delay is much shorter (maybe just about 1-2 minutes).<br />Is this the sign of a bad battery (when hot it can't be charged?) or maybe a bad AC adapter (not enough power to charge the battery when the laptop is turned on?)<br />Note that this symptom is always repeating when I use the laptop.<br /> <p><b>A.</b> From the first part of your complaint description I can see that you have a bad battery. The percentage might vary, but the process of discharging is the same - the battery discharges fine until some point and then the remaining charge suddenly drops to the minimum. You'll have to replace the battery.<br />I'm not sure about the second part. Probably it's a battery related problem too. Just in case check if there is a newer version of BIOS available for your laptop. If you find one, upgrade the BIOS. <br /> <p><b>The battery is 100% charged but it will die within a few minutes as soon as the laptop is unplugged.</b><br /> <p><b>Q.</b> When I unplug the power it will run off the battery, the battery icon says it is 100% charged and I have 2+ hrs remaining, but within a few minutes I get the "critical battery level" message and it will die. When I plug it back into AC power the battery charge light comes on (and will remain on for over a hour), but I will have the same problem with it dying as soon as it is unplugged. Do I need a new battery?<br /> <p><b>A.</b> It looks like you have a bad battery. Here are some behaviors typical for a dying laptop battery:<br />1. The battery charges normally (according to the battery icon) but as soon as you unplug the laptop, it dies almost momentarily.<br />2. The battery charges normally. When you unplug the laptop, it discharges normally until some point and after that point starts discharging very fast. For example it might take 10-15 minutes to discharge from 100% to 80% and then it discharges from 80% to 0 for 2-3 minutes
on Jan 17, 2011 • Computers & Internet
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Green light blinking very fadley pc will not turn on

Sounds like you might have a partial power supply failure. Try unplugging the power supply from everything. Ther should be a switch on the back that is red and says something like 115/220 just flip that switch over to 220 and wait 5 minutes then switch it back to 115 and replug everything in and then try it. If it doesn't work then unplug everything again and let it sit for about 30 minutes (this resets the power supply) and reconnect the wires and if that doesn't work try getting a new power supply. In partial PCB (Power Supply Board) failures the problem is that trere isn't enough power going to the system to start up so sometimes resetting the PCB will fix it temporary. You should get a new one anyway. that one will fail completely soon. Good luck!
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Switch simply wont start up after power failure. Just power led is turned on and nothing else happens. There was a short power failure few manths age and same thing happen. Solution was reseting the switch...

Maybe there was a power surge or spike that damaged the router. But if you unplug it and wait a minute or two, then plug it back in, maybe that will reset it. If it is a router, there's usually a small red button on the back, sometimes recessed, that will reset it and that might cure it.
tip

AC Adapter issues Q & A.

Laptop switching to battery while connected to AC adapter
Q. While turned on, the laptop will switch to battery power even if connected with the AC adaptor (sometimes during boot-up, or after a while) until the battery drains out, he then goes to hibernation (the battery light is off). If no battery in the laptop, it will shut down, and the AC light will blink very fast. The battery (li-ion) will only charge up to 10%, where it then jumps right up to 100%, and will discharge from 100% to 90% then jump to 0%, go to hibernation, and fails to complete the process, shutting down. The adaptor makes a small “camera flash charging” sound, stabilizing at 19v. When charging, it repeatedly makes the “charging sound” Faulty AC adaptor? Or Faulty battery? Or Both?
A. First problem: The laptop switches to battery power even with connected AC adapter. Most likely you have a faulty power jack. It’s either broken or loose. It’s a known issue with laptops and you can fix it by replacing/resoldering the power jack or relocating it outside laptop case.
It also could be a problem with the power cord. Find a multimeter and check the AC adapter. See if the power cuts off when you jiggle the power cord. If it does, replace the adapter.
Second problem: The battery will discharge from 100% to 90% and then jump to 0%. It sounds like a bad battery.
Battery charging light is on even when power adapter is unplugged and laptop is stitched off
Q.The yellow light for battery charging does not go even after switching the laptop off and power jack is disconnected. Battery does not charge at all with power source connected.
A. First of all, try reconnection the battery if you haven’t done it already.
The battery plugs directly into the connector attached to the motherboard. If the battery charging light stay on even when the power adapter is unplugged and the laptop is switched off, it’s either bad battery or something is wrong with the motherboard. The only way to find the culprit is testing the laptop with another known good battery.
Also, you can try this. Remove the battery and plug in the power adapter. If the battery charging LED lights up even when the battery is removed, most likely you have a problem with the motherboard.
Battery charges only when the laptop is off
Q. Bought a Laptop without AC Adapter. I noticed it would charge the battery OK when the laptop was off but once in windows it would not charge the battery.
A. This is very important to choose the right AC adapter for your laptop. The output voltage MUST be exactly the same. If your laptop requires 18.5V you must use 18.5V adapter. The amperage should be the same or higher. If the laptop requires 4.74A adapter, you’ll have to find an adapter which provides 4.74A or MORE.
While using AC adapter alone or battery alone, laptop works. While using them together, I am getting a problem.
Q. While using AC adapter alone or battery alone, laptop works. However while using them together, laptop LED lights blinks and the power meter for battery drops down immediately to 0% critical level, whereas the battery LED indicator says it’s full. I tried to unplug the AC adaptor while it went down to 0%, then the power meter for the battery came back to normal 85%.
A. There could be a few different reasons why it happens:
1. It might be an issue with the BIOS. Make sure the laptop has the latest version of BIOS installed, update it if needed.
2. It might be a software related issue. If you have some kind of power management utility installed try uninstalling it and use Windows power management utility instead. Also I would try reinstalling the operating system if upgrading the BIOS or removing the power management utility does not help.
3. If you still experience the same problem even after upgrading the BIOS and reinstalling Windows, most likely you have a problem with the motherboard. Apparently the charging circuit is not working properly. I assume it’s not a problem with the battery. You’ll have to check the motherboard in this case.
Problem with my battery. 100% to about 40% the battery discharging normally then suddenly from 40% it drop directly to 2%.
Q. When I use only on battery, from 100% to about 40% the battery discharging normally (last about 1 hour) then suddenly from 40% it drop directly to 2%.
When I plug the AC cord, it won’t directly charge (the charge LED is still not on). After 10 to 20 minutes it then starts to charge the battery (the indicator say that it can be charged to 100%).
If I turn-off the laptop and then charge the battery, it won’t also directly charge but the delay is much shorter (maybe just about 1-2 minutes).
Is this the sign of a bad battery (when hot it can’t be charged?) or maybe a bad AC adapter (not enough power to charge the battery when the laptop is turned on?)
Note that this symptom is always repeating when I use the laptop.
A. From the first part of your complaint description I can see that you have a bad battery. The percentage might vary, but the process of discharging is the same – the battery discharges fine until some point and then the remaining charge suddenly drops to the minimum. You’ll have to replace the battery.
I’m not sure about the second part. Probably it’s a battery related problem too. Just in case check if there is a newer version of BIOS available for your laptop. If you find one, upgrade the BIOS.
The battery is 100% charged but it will die within a few minutes as soon as the laptop is unplugged.
Q. When I unplug the power it will run off the battery, the battery icon says it is 100% charged and I have 2+ hrs remaining, but within a few minutes I get the “critical battery level” message and it will die. When I plug it back into AC power the battery charge light comes on (and will remain on for over a hour), but I will have the same problem with it dying as soon as it is unplugged. Do I need a new battery?
A. It looks like you have a bad battery. Here are some behaviors typical for a dying laptop battery:
1. The battery charges normally (according to the battery icon) but as soon as you unplug the laptop, it dies almost momentarily.
2. The battery charges normally. When you unplug the laptop, it discharges normally until some point and after that point starts discharging very fast. For example it might take 10-15 minutes to discharge from 100% to 80% and then it discharges from 80% to 0 for 2-3 minutes.
on Jun 12, 2010 • Computers & Internet
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1answer

E machine monitor turns itself off and on

The same thing happened to me today. I was just sitting in my room then i hear a click and the cpu is on it stays on for a while then cuts off. It then cuts on and off with few seconds in between. It then stays in that way cutting and off for about a minite or two and then cuts off completely. A few minutes later it starts again. Also in the time it its off it will not turn on by pressing the power button. Sometimes it completly boots up by itself and then shuts itself down. If I shut it down manually while its on it'll turn itself on immeditaly after. What's going on! Will the warranty cover it? Do I need a new computer?
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, power cuts off ,

the power cable is broke, but not completely thats why come in and out ...
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Lcm-17v8 monitor

Hi,
This is a problem with the cable that runs from your laptop to the monitor.
Or the VGA Output socket, on your laptop itself.

1:) Try using the monitor, on a different PC Or Laptop.
2:) Toggle The LCD/VGA Button on the laptop. ( This should change the display Mode )
Sometimes you Have A fn key, on the keyboard. Press fn And LCD/VGA.
3:) Check that there is no damage to the cable from laptop to Monitor.
If none of the above work, it,ll be the monitor itself. faulty panel or invertor board.

Mike @ Compurepair.
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