If you are an experienced user working with custom firmware, or if the standard update methods fail, you can try using a DOS or UEFI shell environment for direct flashing:

Frequent crashes, blue screens, or a failure to post (Power-On Self-Test) can indicate a corrupted BIOS chip.

Fans spin up to maximum speed, and indicator lights turn on, but the monitor receives no signal, and the system fails to display the HP splash logo.

Note: You may need to create an account on these forums to download the files. 4. How to Flash the Nutmegminiitx BIOS Bin File