have a hp g6 245 , the laptop was working with also the battery byt itself , but i think after a bios and hdd firmware upgrade the battery doesnt work. so the laptop only works with charger plugged in . the linux and windows operating system says the battery is full , checked with multimeter it says 11v is gong through battery no dead cells. so i think it might have been the bios update ? the bios is no longer available on the hp website is there other place to get bios update to check if it is the problem ?