I have Compaq Presario CQ42 notebook and it usually get hanging problem while on battery power. System has 2 GB RAM with 320 GB HDD. There are not much softwares installed in system and system gets hanged/freezed even when I run Window media player or watch a movie in VLC/KM Player while power is not plugged in(that means get hanging problem on battery power). I am using Windows 7. System also don't have any graphic card.
Moreover, when system gets hanged, I just plug-in my power supply and hanging problem gets solved.
System has a standard Nihon HP battery of 10.8V (4200mAh).
Can anyone suggest some solution or reason why this problem is occuring?
I didn't find the right solution from the Internet.