Only runs on battery when plugged in ...no chager light comes on

The green light will come on if the charger does not sense a low battery. In other words, if you plug it into the wall, and not the scooter, it will still show the green light. It will only show a low charge (and charge the battery) if it is completely connected completing the circuit. My guess is that the battery is dead, and the plug is not all the way connected. Also, I believe the scooter has to be turned off to charge.

The red light indicates that power to the off-board charger is on. Try a different ac wall outlet that you know works. If a red or green light does not come on you will need to replace charger. Also check the condition of your batteries - dead batteries will not charge.

I was unable to locate your specific laptop this might ge you some in sight in what to look for and how to remove cmos battery remember some cmos batteries are soldered in
RTC battery replacement procedure on Compaq HP Mini 110 netbook & clear CMOS http://www.youtube.com/watch?v=P_cxAireIsw

If your battery will not charge, you need to run a test on some components on the laptop. The battery, the charger and the laptop itself. Once you detect the faulty conponent then you replace it with a new one.

To test the battery:
1.Power off the laptop,
2.Take out the battery,
3.Insert it in another laptop,
4.Check of it will charge,

If the battery holds a charge there, then it means the problem is not from the battery, but if it does not hold a charge, then it means the battery is defective and need to be replaced with a new one.

To test the charger:
1.Unplug the charger from the present laptop,
2.Connect it to another laptop to see if it will charge.

If it charges the laptop, then it means the charger is alright, and if it does not charge the laptop, then it means the charger is bad and need to be replaced.

To test the laptop:
1.Turn off the laptop,
2.Disconnect your present charger,
3.Remove your present battery pack,
4.Insert a well tested battery into the laptop,
5.Connect a well tested charger to the laptop.

If it powers on, then it and charges, then it means the laptop is working fine, but if it does not charge, then it means the connection port of the laptop is bad.Hope this information was helpful.

It sounds as if you need a new charger. Try removing the battery and start the machine with just the charger. If that works then it may be a new battery you need. Some toshiba notebooks have a 'power saver tool' preinstalled, which is used to monitor battery performance. You can download a copy here:
http://eu.computers.toshiba-europe.com/innovation/download_drivers_bios.jsp?service=EU
Not sure if it will be compatible with your machine, but maybe worth a try as it could be a corrupt program causing the problem.

It maybe Athlon X2 shorted out. Replace the cpu so that it will not shut down the charger.

nc2400. (circa , 2007 made) and still supported at HP (we arent HP)
another old., pc dead. value is $20 (see ebay solds? yes)
so it less dead like this.
here are the steps,
main battery out, ? work now,
that is correct, BIOS works , with no battery, AC PACK good, 19vdc = good.
and hdd out , cd out.
ever heard OF CCFL ?
2010 then ended, so I first check this , yours being 2007
BINGO CCFLs, they are short lived lamps back lamps.
so use a flash light.

btw the externa VGA jack needs Fn+F4 pressed to work!!!
per manual below.
your SM is here
http://h10032.www1.hp.com/ctg/Manual/c02012281


now the test, acid test on CCFL.
with bios hot keys hammered, per book above.
then the magic flash light trick, (posted here now 300 times)
look ma, no blacklight.. but gee see the data., BINGO.
http://www.pcdied.com/monitors.html#flashlighttest

You need a new charger. Contact HP to find an estimate of the cost.

Buy a new charger. Ebay, very inexpensive.

Power drain would be a better solution in this case.
1.first shut down the comp
2.unplug the charger
3. remove the battery
   and after press and hold the power button for 60 seconds without any charger and the battery.After the 60 seconds replug the battery and the charger and turn the computer .