Good afternoom, my HP laptop with board Compal LA-G07JP only starts with battery but with something anormal :

- With only battery startup is normal.
- With only AC adapter same voltages but no EC_ON, no power up.
- Powered off AC adapter charges battery normally.
- With AC adapter charging battery as soon power on is pressed, charge is interrupted and laptop begins to run from battery.

No way to run from AC adapter. Which can be the reason?...