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- ACPI BIOS ERROR

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06-15-2025 04:24 PM
@RedBird506, Welcome to HP Support Community,
Thank you for posting your query; I’m here to help by guiding you through steps to resolve this issue
The "ACPI BIOS ERROR" stop code (usually 0x000000A5) indicates a problem between Windows and your computer's BIOS, particularly with ACPI (Advanced Configuration and Power Interface) — which controls power management and hardware communication. When you're stuck in a boot loop like that, it typically means Windows can't boot because the BIOS isn't providing compatible ACPI support.
Power Cycle the System
Just in case this is temporary corruption:
Turn off the PC completely.
Unplug the power cable (and battery if it's a laptop).
Hold the power button for 10–15 seconds.
Reconnect and power it back on.
Enter BIOS/UEFI Settings
You’ll need to make sure your BIOS is properly set up.
Restart your PC and enter BIOS/UEFI settings.
Once inside:
Reset BIOS to Default settings
Boot to Windows Recovery (WinRE) or USB Installer
You may need a bootable USB drive:
If you already have a Windows 10/11 USB installer:
Plug it in and boot from it (change boot order in BIOS).
On the Windows Setup screen, click:
Repair your computer > Troubleshoot > Advanced Options
Try:
Startup Repair
System Restore (if available)
Command Prompt and run: sfc /scannow chkdsk c: /f /r
If you don’t have an installer:
You can create one from another PC:
Go to: Download Windows 10
Download the Media Creation Tool and create a USB installer (8 GB+)
I hope this helps.
Please feel free to reply here if you have any questions or if you need further clarification on any of the steps.
Take care and have a good day.
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Regards,
Garp_Senchau
I am an HP Employee
06-16-2025 10:27 PM
@redbird506 i have the same problem, but i can't understand if i need install the same API versión? or a new API version?
laptop's specs:
HP PAVILION ab-126la (p0e23la)
Processor: AMD-A10 8700P
v.BIOS: AMI F.54
06-17-2025 01:04 PM
Thanks for reaching out! I suggest you reach out to the nearest HP Authorised service center for personalized assistance. They can provide one-on-one help to fix the problem.
Note: There might be a nominal charge for the service they provide.
HP® Service Center Locator - United States | HP® Support
Regards,
Garp_Senchau
I am an HP Employee