BIOS updates are usually provided as .exe files by the OEM (HP). If your PC was discontinued, these may be archived or unavailable.
Updating the drivers for your Pegatron Corporation 2A99 motherboard is a relatively straightforward process. Here are the steps:
⚠️ Do use generic “driver updater” software like Driver Booster, IOBit, or Driver Easy (many are adware/misleading).
This is the most cited update for the 2A99 board found in HP desktops.