Battery not showing that it is charging

Question

Hi
I have a dv6000 on which I have installed windows 7 ultimate 64 bit. Originally it had Vista Home Premium.
Recently I purchased a new 12 cell battery to replace the old original 6cell one.
Now I find that the meter is reading 0% available (plugged in, not charging) or if I remove the battery and reinsert it it then starts to show that it is charging for about 15 seconds then stops showing the battery charging movement but says
0% available (plugged in, charging)
Also I cannot turn the notebook off with the battery in. It gets to the blank black screen and then just hangs. If I remove the battery it closes down as is is supposed to. And will restart fine.
I tried removing the onboard BIOS battery  holding the startbutton for 2mins and that then showed the battery as 100% charged. (I read this on another forum) but after closing down and restarting it's back to the old 0% available (plugged in, charging)
The little blue LED on the front pannel also shows 0% as it is constantly blinking.
I have read on other forums that this is a software problem and cannot be solved.
Others say it requires a BIOS flash. But having Win 7 HP do not offer a flash exe for it . They only go to Vista fror this model anyway.
Funny thing is I suppect that the baqttery is actually charged up as I can remove the AC lead and the notebook chugs along fine, it's just the shutting down and battery icon thing that's weird
So does anyone here have any solutions. Or have had similar occurances.
Regards
Allan

Answer 1

If you already have checked the problem is not the battery ( usually when the battery is new or when the battery is charged on another notebook), or the AC to DC converter, then you must check this first:
1) Remove your battery,
2) Unplug your power cord from the notebook,
3) Push the power button for 15 seconds (if necessary you can hold down for 1 minute),
4) Plug the power cord into the notebook,
5) If the power led is on, your power adapter is probably working,
6) Push the power button,
7) If the computer powers on, your power adapter is probably working ( it's more certain than before),
8) Try to use the computer,
9) After Windows finished the entire start up process, you must insert the battery,
10) It's expected that the battery icon shows charging.
If it happens to you,  therefore the problem is in the motherboard. The exact point it is in the IC responsible for check and control the status of the battery. Up to know I don't know where is located the fault IC. This fault IC is a Voltage Comparator, usually it is an Operational Amplifier.
If you remove the powerplug the computer will start to drain the battery until the end, but if you reinsert the powerplug  the computer WILL NOT detect, and it will continue to drain the battery until the end.
If you remove the battery with the powerplug inserted, the computer will turn off, cause it doesn´t recognize the power source from the cordplug.
Remove the power plug, insert it again without the battery and the computer must be able to turn on.
If you turn on the computer, and after this you insert the battery than the computer will start to charge the battery.
Resume:
A) To charge the battery you must insert the battery after the computer it is on.
B) To use the battery power you must disconnect the power cord, but you won't be able to charge it until you turn off the computer  and remove the battery, and to follow the step A.
I verified that the problem happens to all DV6000 ( DV60xx ), DV6100 ( DV61xx ), DV6200 ( DV62xx ), DV6300 ( DV63xx ), DV6400 ( DV64xx )and DV6500 ( DV65xx ) series.
My case is a HP Pavilion DV6104eu, that I bought in UK.