| Revision | Chipset | Southbridge | Best Driver Source | | :--- | :--- | :--- | :--- | | Rev 1.x | NVIDIA GeForce 6150SE nForce 430 | MCP61 | NVIDIA Legacy (v307.83) | | Rev 2.x | AMD 780G | SB700 | AMD Chipset Drivers (legacy) | | Rev 3.x | NVIDIA MCP61P | MCP61 | Windows 8.1/10 built-in |
| Problem | Likely Fix | |---------|-------------| | No audio after Windows 10 update | Disable Driver Updates from Windows Update (Group Policy), then reinstall Realtek v2.82. | | Ethernet not working | Check if MAC address is cleared (OEM issue). Set a manual MAC in driver properties. | | USB 3.0 ports not working | This board has no native USB 3.0. Use PCIe USB 3.0 card. | | Sleep mode fails | Disable Hybrid Sleep in Power Options. Older chipsets lack modern S3 support. | | Windows 11 installation blocked | Use Rufus to create a bootable USB with TPM/Secure Boot bypass (the 2A99 has no TPM). | Pegatron Corporation 2a99 Motherboard Drivers
