However, you can access the official HP maintenance and service guide that contains the exact motherboard layout, BIOS settings, jumper settings, and troubleshooting for the M2N78LA.

Page 12: Jumper Settings.

The motherboard (OEM engineered for HP under the codename Violet ) is a popular but aging piece of hardware that requires some technical know-how to maintain. 🛠️ Essential Pegatron M2N78-LA Manual & Setup Guide Core Hardware Specifications Form Factor: Micro-ATX (24.4 cm x 24.4 cm) Chipset: NVIDIA GeForce 9100