HP Pavillion stuck in recovery loop in Win 10 with ACPI BIOS ERROR

[BigDog2025]

Hi! After Windows 10 last update on June 12, 2025 my notebook will not restart and loops with “ACPI BIOS ERROR”. Automatic Recovery fails and even booting from a Win 10 ISO image from my USB drive will get me to this same error (after the Windows logo displays).

I reflashed by BIOS with help from this forum and tried resetting the BIOS to default but still get the same error. Anyone can offer any other tests to try to get my Windows back up and running? Thanks.

[Kuroi_Kenshi · Accepted solution]

Hi @BigDog2025,

Welcome to the HP Support Community! 

Thanks for reaching out about your query regarding the ACPI BIOS error in the HP Pavilion Notebook!

We're thrilled to have the opportunity to assist you and provide a solution.

Try these steps:

Enter BIOS Setup Utility:

• Turn off your notebook.
• Turn it back on and immediately start pressing the F10 key repeatedly until you enter the BIOS setup utility.

Reset BIOS to Default Settings:

• Within the BIOS menu, use the arrow keys to navigate to the Main tab.
• Choose Restore Defaults or Load Setup Defaults.
• Confirm and save the changes by pressing F10.

Update BIOS and Firmware:

• Ensure you have the latest BIOS and firmware installed for your HP Pavilion notebook.
• You can download the latest BIOS update from the HP Customer Support website.

Clear CMOS:

• Disconnect AC power and remove the battery (if removable).
• Press and hold the power button for 15 seconds.
• Reconnect AC power and battery, then try turning on the notebook.

Memory and Hardware Check:

Reseat Memory Modules:

• Turn off the notebook and safely remove the back cover.
• Carefully remove and reseat the RAM modules.
• Ensure they are correctly installed and locked in place.

Remove Peripherals:

• Disconnect all unnecessary external peripherals such as printers, USB drives, etc.
• Restart the notebook with only essential components.

Using HP PC Hardware Diagnostics:

1. Run Diagnostics:
   • Turn off the notebook.
   • Turn it back on and immediately start pressing the Esc key repeatedly until the Startup menu is displayed.
   • Select F2 for System Diagnostics.
   • Run the extensive diagnostic tests for your hardware components.

I hope this helps.

I'm glad I could help! 😊 If this resolved your issue, please mark it as "Accepted Solution" and click "Yes" on "Was this reply helpful?" Your feedback not only keeps us going but also helps others find the solution faster! 👍✨

Take care and have an amazing day ahead! 🚀

Best regards,