power LED won't light & battery not charging

Lenovo Lenovo 3000 n100 cen core duo t23...
December 4, 2010 at 15:19:48
Specs: Windows 7, 1GB
I own a lenovo 3000 n100 which has worked fine for the past 6 months since i got it. Two weeks ago i realized that my battery was low on power so i connected the power supply. Nothing changed the battery level just kept going down. I glanced at the LED and noticed that It was off. I removed the battery and run the notebook on A/C power. It booted up nicely and run well for another two weeks on A/c power. This morning the Laptop shut off. I put it back on and it run for two hours then shut off again. I checked to see if it was hot and noticed that it was cool, the fan was spining normal and the power supply was a bit hotter than usual. I put it back on and changed the location of the power supply to a cooler place. The same thing happened in less than ten mins. I left it alone and came back to it ten mins later with another battery a friend borrowed me. It did not charge tha battery either.I tried my battery on his laptop and his charged my battery fine. Could someone tell me what is wrong with my pc?

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December 4, 2010 at 15:39:44
I think you've figured it out on your own. It's probably either the power supply (brick) or the power management components in the machine itself. If your friend has the same type of machine (guessing because you said the battery fit), try using your brick on his laptop and see what it does.

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December 5, 2010 at 10:35:14
I tried his charger on my laptop and it did the same thing after an hour. It seems to be a component inside the laptop itself.Could u tell me what part inside it is responsible for this?Is it possible that i change that part or the whole motherboard?

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December 5, 2010 at 10:49:09
did you try his charger 'while' your battery was removed? Also while the battery was in?

Was windows 7 origionally installed on the laptop or is it an upgrade?

I own a lenovo 3000 n100 which has worked fine for the past 6 months since i got it.
Doesn't that mean the laptop is still under warranty?

Some HELP in posting on Computing.net plus free progs and instructions Cheers

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Related Solutions

December 5, 2010 at 12:02:35
Have you or anyone who could have used this computer
- dropped this laptop ?
- spilled liquid on it ?

If NO, if your laptop is still under warranty, your problem is covered by the warranty - take it to someplace local to have it fixed !

If it's NOT still under warranty....

Check your power jack.

Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.

See response 1:

Tips about battery charging problems on Dell laptops - may apply to other makes.
See response 3 in this by iTech:

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January 27, 2011 at 20:46:09
just go to lenovos website and update the bios, i had the same proplem, after i updated the bios, it charges and doesnt shut down anymore

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January 28, 2011 at 07:47:23

Do you have exactly the same model - Lenovo n100 something ?

It makes no sense at all to flash the bios with a newer version if the bios version you already have caused no problem with the charging of the battery previously at any time, even if that presently wasn't working properly.

In any case, I doubt very much that the bios version has anything to do with the charging of the battery - that's probably automatic and depends on the hardware working properly only.

You never flash the bios unless you find specific info such as in release notes for a bios version that flashing the bios with a newer version will definitely fix a problem you are having.

In this case there are no bios updates at all listed in the Windows 7 downloads, and the latest one for XP and Vista mentions nothing about fixing charging problems in the release notes for the 3.12 version or for previous versions:

Slickboyy Mike81

Troubleshooting battery issues - Value Line notebooks

Troubleshooting power management issues - Value Line notebooks

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