Hello

I have model AHL50/abl52 LAC710p - ac120ns. It doesn't turn on after connecting the battery. The battery is charging correctly. I remove the battery, restart the bios by pressing the start button for 30 seconds without a charger and it works. I connect the battery, press the start button and it does nothing.
When it is on and I connect the battery, I reset it and it works and detects the battery.
I have measured some voltages according to the schematic and they are correct.​
Can the BIOS be corrupted?...

Hello,

I have a motherboard from an HP laptop: AHL50/ABL52 LA-C701P. Idle consumption is 35 mA; when the power button is pressed, the consumption goes up to 85 mA and stays there for about 15 seconds, then returns to 35 mA at idle.
First observation: the UEFI chip is not powered (MX25L6473E). I've checked the schematic; the +3V_PCH seems to come from two MOSFETs, 2N7002 and AO3413L. However, I don't have either +3VALW or PCH_PWR-EN present. The PCH_PWR-EN comes from the EC (KB9022QD). I've tested the +3VALW_EC on a few pins and I have 3.3V on pins 22, 32, 47, 97, 98, etc....

Hearty greetings to everyone, trust you all are doing excellently well.

Please, I have the above problem, the laptop turned on after the switch was activated but it will turns off in less than 2 seconds.

The power stables in very rare case. Once it was stabled, everything works fine.

Once the power switched is pressed, 5V and 3V were present.

The things i have done:

1. I have check for shorts on the board, but nothing. The board is short free

2. Not a power switch problem, it behaves the same without the switch ...

hi, i need bios for hp 15-ac122tu
MB Model : AHL50/ABL52 LA-C701P REV 1.0

hi, i need bios for hp AHL50/ABL52 LA-C701P REV 1.0...