Here are the detailed specifications of the Pegatron M2N78LA motherboard:
Locate the (or CLR_CMOS ) 3-pin jumper block near the coin-cell battery. The jumper is normally on Pins 1-2 (Default/Normal mode). Move the plastic jumper cap to Pins 2-3 (Clear mode). Wait approximately 10 to 15 seconds. Move the jumper cap back to Pins 1-2 . pegatron motherboard m2n78la manual top
The header typically features a 9-pin or 10-pin layout (with one pin missing as a key guide). Here are the detailed specifications of the Pegatron
As an OEM board, the BIOS is branded with HP/Compaq logos. It is generally locked down compared to retail boards. Wait approximately 10 to 15 seconds
Here is your best strategy to access the official documentation:
The best place to find the official documentation is HP's support website for your specific computer model. The documentation will be for the complete PC (e.g., HP Pavilion p6211f) and will contain a section dedicated to the motherboard.
If your system fails to boot after a hardware change, clearing the Complementary Metal-Oxide-Semiconductor (CMOS) memory will restore the BIOS to its default factory settings. Step-by-Step Clear CMOS Instructions