Positives:
Negatives:
When finished, your Device Manager should show no unknown devices. The following categories must be present: Pegatron Corporation 2a99 Motherboard Drivers
If you see "PCI Device" or "Unknown device" with a yellow mark, right-click → Properties → Details → Hardware Ids. Copy the VEN_xxxx&DEV_xxxx code and search it on PCI Database (pcidatabase.com). This will tell you exactly which driver is missing.
The 2a99 almost exclusively uses Realtek High Definition Audio Codec. Positives:
If you are reinstalling Windows on a machine with this motherboard, here is the specific breakdown of the drivers you need and where to get them.
Fix: This is a legacy AMD graphics driver conflict. Uninstall all AMD display drivers using DDU (Display Driver Uninstaller) in safe mode, then reinstall the specific HP OEM ATI Radeon 3000 driver, not the generic AMD Crimson driver. Negatives: When finished, your Device Manager should show
Fix: This is a common AMD SB710 southbridge issue. Update the AMD USB Filter Driver from HP. If unavailable, go to Device Manager → Universal Serial Bus Controllers → Right-click each “Standard OpenHCD USB Host Controller” → Update driver → Browse my computer → Let me pick → Select “AMD USB 2.0 Host Controller.”
| OS Version | Driver Availability | Notes | |------------|---------------------|-------| | Windows 7 (64-bit) | Excellent – Full HP support | Legacy driver pack works perfectly. | | Windows 8.1 | Good – Most HP drivers available | Some sleep state issues. | | Windows 10 (64-bit) | Moderate – Rely on Windows Update | Use HP Windows 8.1 drivers in compatibility mode. | | Windows 11 | Poor – No official drivers | Install via Windows 10 drivers; chipset works, but audio may need Realtek generic. | | Linux | Excellent (in-kernel) | Ubuntu/Mint detect 2a99 fully out-of-box. |