need to create bootable usb for bios on HP Pavilion Notebook - 17-g121wm (ENERGY STAR)

[Robb127]

My HP Pavilion Notebook - 17-g121wm (ENERGY STAR) hard drive crashed and need to replace hard drive. Purchased a SSD drive to replace SATA drive. Downloaded bootable windows ten to install a new copy of windows ten on the SSD drive. When I ran the USB program windows installer I was given  a ACPI boot error from windows installation as soon as it started. Now I need to create a USB bootable bios to fix my bios so I can load windows 10 on my  laptop.  This all started when II was doing a windows go back when power got disconnected and battery died before it could  finish and when I returned the laptop would only open HP start screen then shut down and restart. 

 

 

[Samrit26]

Hello,
Thanks for laying that out clearly — that ACPI BIOS error during Windows setup is a classic symptom of corrupted BIOS or incomplete rollback from a failed Windows recovery. On your HP Pavilion 17-g121wm, here’s how I’d approach it carefully to recover the system.

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 Step-by-Step Recovery Plan

 Confirm the hardware change

You did right replacing the old SATA HDD with an SSD — the Pavilion 17-g121wm fully supports 2.5" SATA SSDs (no BIOS setting change required).
However, after a crash + incomplete Windows rollback, the BIOS NVRAM tables (ACPI) can become inconsistent — hence the ACPI_BOOT_ERROR.

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 Reset BIOS completely

Let’s start clean before flashing anything.

Steps:

1. Disconnect AC adapter and battery (if removable — if not, just unplug the adapter).

2. Hold down the power button for 15 seconds.

3. Reconnect power (no USB drives inserted).

4. Power on, and immediately tap Esc → then F10 to enter BIOS.

5. In BIOS → press F9 (Load Setup Defaults) → then F10 (Save and Exit).

6. Restart and reattempt boot — if same ACPI error persists, continue below.

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 Create a BIOS recovery USB (HP BIOS recovery flash drive)

 What you need:

• A second working Windows PC

• 1 empty USB flash drive (at least 8 GB)

• The latest BIOS for HP Pavilion 17-g121wm

 Download from HP:

Go to
HP Support – Pavilion 17-g121wm BIOS

Then:

1. Select your exact OS version (Windows 10 64-bit — even though the system had 8.1).

2. Under “BIOS”, download the latest HP Notebook System BIOS Update (SoftPaq) (filename like spXXXXX.exe).

Create recovery USB:

1. Run the BIOS installer on the working PC.

2. When prompted, choose “Create Recovery USB Flash Drive”.

3. Follow prompts until it writes the BIOS image to USB.

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 Recover BIOS on your Pavilion

1. Insert that USB into your Pavilion.

2. Hold Windows key + B, then press Power for 2–3 seconds.

3. Keep holding Windows + B until you see the HP BIOS Recovery screen.

4. It should automatically detect the USB and start flashing the BIOS.

5. Once it completes, system will reboot — do not interrupt power during this process.

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 Reinstall Windows 10

After BIOS recovery:

1. Boot into BIOS again → ensure UEFI boot mode is enabled.

2. Insert your Windows 10 installation USB (created with Microsoft Media Creation Tool).

3. Boot from USB (press Esc → F9 → choose USB).

4. Delete all partitions on the SSD during setup → allow Windows to create new ones.

5. Install Windows normally.

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 Notes

• ACPI_BOOT_ERROR means Windows installer found an incompatible or damaged ACPI table from BIOS. Reflashing BIOS fixes that.

• Do not try to downgrade BIOS manually or use another model’s BIOS — it will brick the board.

• If BIOS recovery doesn’t start with Win+B, try Fn+B instead.

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If you want, I can help you find the exact SoftPaq number (e.g., sp78205.exe) for your specific BIOS version — just confirm whether your Pavilion is still booting enough to show a BIOS version (press Esc → F1 at startup).

[Paul_Tikkanen]

Hi, @Robb127 

Normally going into the BIOS>Security menu and hiding the TPM security device will resolve the ACPI BIOS error.