Question about Sony VAIO VGN-C140G/B Notebook

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Battery When i start up my laptop connected to the wall outlet, it loads and works good. But, when i unplug the power cable, the computer just cuts off. I checked the battery in windows XP and Vista Ultimate and it says that there is no battery present, even when its connected to the battery. I sent it in for support, but i think that its not the battery or windows.

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Re: battery

You may want to check the contacts on the battery and the matching contacts in the laptop, itself. Look for bent or broken contacts, any corrosion, any foreign material on them.
Not much help, I know, but that's all that I can think of right now.(other than a bad internal power supply)

Posted on Nov 06, 2007

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Laptop will not turn on, laptop will not power on, laptop will not start

Make sure your laptop battery has a charge. Plug it into the wall outlet for 30+ minutes and then try powering it on. When you plug it into a power source, usually the laptop will have a light indicating that it is charging. Look for a light. If the light does not light up, try a different wall outlet. <br />If it still does not charge, you may have a bad power cord, a bad laptop battery, the wall outlet may be bad or the laptop itself is damaged and will need to be serviced by a technician or replaced.<br /><br />Through the process of elimination you can narrow down possible causes.<br />-Try a different wall outlet(or by testing another device make sure the wall outlet is good)<br />-Try a different power cable.<br />-Try a different laptop battery.<br /><br />If none of the above help then you may need to have your laptop repaired(internal damage) or replaced.<br /><br />If your laptop is under warranty you should contact your laptop manufacturer or warranty policy holder to have it repaired or even replaced. <br /><br />If it is not under warranty you should look for local computer repair shops or technicians. <br /><br />-G33k<br />

on May 22, 2011 | PC Laptops

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My pc wont continue booting because of usb overload

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Check your computer's power cable and the power cables to any devices connected to the computer. Make sure all cables are firmly plugged into electrical outlets and into the computer and other devices. If you have an extra power cable for your computer, swap it in to see if your computer's power cable is the problem. Remove your computer's battery, if it is a laptop, and connect the computer to a electrical outlet to see if it will start up. Sometimes a discharged battery will prevent a laptop from powering up. If your laptop still won't power up, remove the power cable, replace the battery and try to run the computer off battery power. Unplug your computer and plug a lamp or radio into the same electrical outlet and see if that device works.
If the lamp or radio doesn't work, the outlet is the problem. Unplug your computer and open your computer's case, if it is a desktop system. Look for loose cables, cards and connections and attach them firmly. Blow out any dust with a can of compressed air. Also, check your computer's memory chips to make sure they are all plugged in and seated properly. Close the case once you are done and plug in the computer. Disconnect any USB devices connected to your computer and try to power up the system. Sometimes a USB device not connected properly will stop a computer system from powering on. Disconnect any new devices recently added to your system. Sometimes new devices will conflict with other hardware within your computer and cause an overload on your computer's power supply. Disconnect any other devices connected to your computer such as the keyboard, mouse, monitor, printer or scanner and plug your computer into a electrical outlet by itself. Check to see if the computer works. If does work, shut it down and connect just one device, such as the monitor. Turn on the computer and monitor and see if everything works. Continue connecting devices until you find the one that is stopping your entire system from powering up. Hope it helps.


Jan 23, 2013 | PC Laptops

1 Answer

Dell Inspiron 5720

F-8 is the key, Try to "cold start" the computer, meaning remove the power plug from wall outlet or uplug from computer, remove battery, now replace battery and plug computer into wall outlet. Push the on button while "TAPPING" the F-8 key repeatedly Tap, tap, tap, until you hear a beep or it load the black menu with safe mode options. IF THAT DOES NOT WORK: shut down the laptop,remove AC supply, remove battery. Plug the AC power back in,DO NOT INSTALL BATTERY, Start the machine, without battery installed, and tap F-8 repeatedly. If it still fails, PULL THE PLUG OUT OF THE WALL OUTLET WHILE THE COMPUTER IS STILL RUNNING. NOW PLUG THE LAPTOP BACK INTO THE WALL AND START, THAT SHOULD TAKE YOU TO A BLACK PAGE WITH WHITE SCRIPT WITH OPTIONS YOU ARE LOOKING FOR.

Oct 31, 2012 | Dell PC Laptops

1 Answer

I have a good day estimated presario 700 laptop and I need help because they will not start, I connect the power supply and keeps the battery light turned amber, in conjunction with the direct power. no...

unplug the power cable from the laptop
remove the battery then press the power button for 5-10 secs
plug in the power cable to your laptop WITHOUT the BATTERY

try to turn on your computer if still doesnt work try a known good A/C adapter if still doesnt work then mobo needs to be replace

Sep 06, 2010 | Compaq Presario 700 470024-192 Notebook

2 Answers

HP dv 2000 will not start

Remove the battery and unplug the power. Now plug the power back in and attempt to start the laptop without the battery. If there is still no boot make sure your power is connected into a working wall outlet. Your laptop should have a light indicating it is getting power from the adapter. If this still doesn't work you'll likely need to take it into the shop. Issue might be a faulty adapter or a hardware failure within the laptop. Best of luck, Ravi Shanghavi

Aug 18, 2010 | Dell Latitude D600 Notebook

3 Answers

Battery is 100% charged but when i unplug the cable the computer goes off. Why?

The batterycould be old.
lithium batteries does not go dead when old
You simply cannot get the energy it stores.
That isthe draw back with them.
Other wise they would probably last forever.

Jan 20, 2010 | HP Compaq 6510b PC Notebook

1 Answer

Computer shut down

The sparking has probably caused your circuit protection inside the AC adapter to turn off the current.
Also, when you are plugging an adapter in,,do not have it plugged into the wall power outlet when plugging into the laptop,,,plug into the laptop first and then plug into the wall.

Jan 29, 2009 | Compaq Presario Notebook

1 Answer

No power

Unplug All External Devices Unplug the AC Adapter From the Wall Outlet. Disconnect the AC Adapter From the Laptop Reseated the power cable to the adapter.
Remove the Battery Connect the AC Adapter Directly to a Known Good Outlet, But Not to the Computer Verify That the AC Power Adapter Has a Solid Green or Blue Light.
The AC adapter status light is solid green. The AC adapter status light is solid green.Press the Power Button and Check for POST. Post means if you see the dell logo,remove the battery, plug the ac if still it wont turn on or doesnt have any light,Reseat the Memory if after reseatting the memory still the same problem it might be a bad motherboard.

Oct 23, 2008 | Dell Inspiron XPS M140 Notebook

3 Answers

No power at all and power supply and battery are good


My name is Vikram Kumar Thumu, from India-Hyderabad. I have seen your message on the issue related to issue with notebook that seems to do not start at all. I would like to provide my suggestions on the issue. I hope that this should work for you and will resolve the issue.

Please try below solutions on the issue.

Solution 1: Power Drain

1. Make sure that pc in OFF and then disconnect the Power cable from Wall oulet
2. And then try to remove the Battery from Pc, then let the Notebook idle for 1 minute.
3. Then make sure that there is no power and battery, then try to Press and hold Power button of PC for 30 seconds,  and then release power Buttsn of Pc after 30 seconds. This should release the Static Power that is located in PC
4. Then reconnect the Battery and then powerr cable, then try to power ON PC, and check the issue.

I hope that this should start the PC, if the issue still persists then try the next solution.

  I guess that there could be an fault with PC power Adapter or with Power Cord, try to check for damage on the Power Adapter or on Power cord . If they are fine, please try to disconnect them and reconnect it firmly and check the issue. You can also try to isolate the issue by connecting the PC in another wall outlet  and checkk out the issue.

Solution 2:

Check whether If Notebook power indicator light (LED) is on, when AC adapter is connected.
Power indicator light (LED) is off
If the power indicator LED is off, the AC power adapter may need to be replaced. To determine if the AC power adapter needs to be replaced follow the steps below:
  1. Ensure that the AC adapter is plugged directly into a known working wall outlet. NOTE: To check the wall outlet, plug in a different known working device like a light, radio etc.
  2. Check all of the following connections:
    • The connection from the AC adapter to the wall outlet.
    • The connection into the power adapter from the wall outlet.
    • The connection from the AC adapter to the notebook.
  3. Press the power button again to test the notebook PC.
  4. If the power indicator does not turn on, remove the AC power adapter from the notebook PC and re-insert the battery. Then press the power button. If the power indicator light still does not turn on, then the AC Adapter needs to be replaced.



For your convenience,  you can open below web link on the issue . I made alot  of search and foundd this link. I hope that this helps you.


Link is :

This should resolve the issue for you.

 If you need any further assistance on the issue, you can mail me at . I'll be glad to help you.



Oct 27, 2007 | HP Pavilion dv1000 Notebook

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