The LGA 1155 socket on this board supports both 2nd generation (Sandy Bridge) and 3rd generation (Ivy Bridge) Intel Core processors.

Pins 2 (+) and 4 (-) (Top left pair) — Case power light indicator.

A: It’s the HP system board ID (visible in Windows System Information). Both refer to the same board.

Pin 1: Power LED (+) | Pin 2: Power LED (-) Pin 3: Power Switch | Pin 4: Power Switch (ground) Pin 5: HDD LED (+) | Pin 6: HDD LED (-) Pin 7: Reset Switch | Pin 8: Reset Switch (ground) Pin 9: No connection | Pin 10: Key (missing pin)

Because this is an OEM motherboard, finding a comprehensive manual online can be incredibly frustrating. This guide serves as your complete, definitive technical manual, detailing layout specifications, front panel headers, CPU support, and troubleshooting steps. 1. Technical Specifications Overview

If the system fails to boot after a hardware change, resetting the CMOS memory often fixes the issue. Turn off the computer and unplug the power cord.

If the system won't boot after a change, reset the BIOS to its default state.

4-pin or 8-pin ATX 12V connector located near the CPU socket. Ensure this is plugged in, or the board will turn on for one second and shut down loop. Troubleshooting Common Issues 1. Black Screen / No Display after Graphics Card Upgrade