My pc not boot without charging

[Sethiram1]

My pc was full charge but not boot without charging 

[Max3Aj]

@Sethiram1, Welcome to HP Support Community. 

Thank you for posting your query, I will be glad to help you. 
If your HP laptop won’t turn on unless the charger is plugged in — even though the battery is fully charged — this usually points to one of these common issues:

Possible Causes:

1. Battery Health Issue: The battery might show 100% but is not supplying enough power to boot the system.
2. BIOS or EC Firmware Problem: The Embedded Controller (EC) or BIOS could be misreporting battery status or controlling power flow incorrectly.
3. Motherboard/Power Circuit Fault: A damaged power delivery component (like the MOSFET, power IC, or charging circuit) might prevent the system from drawing power from the battery.
4. Battery Not Detected Properly: Windows or BIOS may not be detecting the battery correctly, causing the system to default to AC power.

Recommended Steps:

Step 1: Basic Battery Reset

1. Turn off the laptop.
2. Unplug the charger.
3. Press and hold the power button for 15–30 seconds.
4. Plug the charger back in and try booting without powering it on first.
5. Now unplug the charger and try booting on battery only.

Step 2: Check Battery Status in BIOS

1. Turn on your laptop and immediately start pressing F10 repeatedly to enter BIOS.
2. Check if the battery is detected and shows a charge level.
   • If the battery status shows "unknown" or "0%", that's a red flag.

Step 3: Update BIOS

• If your battery is detected but the system still won't boot without AC:
  • Download and install the latest BIOS update for your HP model from the HP Support website.

Step 4: Battery Report (Windows)

1. Connect the charger and boot to Windows.
2. Open Command Prompt as Admin.
3. Run:

powercfg /batteryreport

1. Check the report in C:\Users\<YourUsername>\battery-report.html — look for:
   • Design Capacity vs Full Charge Capacity
   • Any abnormal "Last Full Charge" values.

 If the battery is removable:

• Try removing the battery and cleaning the contacts gently, then reinsert it and test again. 

I hope this helps. 

Take care and have a good day. 

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Select "Yes" on the bottom left to say “Thanks” for helping! 

Max3Aj

HP Support