bios downgrade

[AS273]

my bios is corrupt.  i need to downgrade to F.13     How do I do that?

[Deep_World]

Hi @AS273,

Welcome to the HP Support Community!

Thanks for reaching out!

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

I’m sorry you’re going through this; I understand the concern and don’t worry I’ll help you with this.

To better understand the issue, could you please provide a few more details?

What exact HP laptop model are you using? (BIOS files are model‑specific, so this is critical.)

Did the corruption happen after a BIOS update attempt, or did the system suddenly stop working?

Can you still access the BIOS recovery screen (by pressing Win + B or Fn + B while powering on), or does it fail immediately?

Here are some troubleshooting steps worth trying:

• Check HP Support site for your model: Go to HP’s official support page, enter your laptop’s product number, and look under BIOS in the driver downloads. If F.13 is available, download it directly.
• Create a BIOS recovery USB: Use another PC to run the HP BIOS Update utility. It will let you create a recovery USB stick with the BIOS file. Insert this into your laptop and try recovery.
• Use BIOS recovery hotkeys: With the laptop off, hold Win + B (or Fn + B) and press the power button. Keep holding until you see the BIOS recovery screen.
• Clear CMOS: Disconnect power, hold the power button for 15–20 seconds, and if possible, remove the CMOS battery briefly. This can reset corrupted settings.
• Check BIOS mode: If you can still enter BIOS setup (Esc → F10), restore defaults and save before attempting the downgrade.
• HP Support Assistant: If Windows still boots, run HP Support Assistant to check for BIOS rollback options.

When you try to start the laptop now, do you get any BIOS recovery prompt at all, or is it stuck with a black screen? That detail will help determine whether a recovery USB will work or if the system board may need service.

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,

Deep_World