These should remain lit constantly. If an LED is dark, it suggests a power supply failure or a short circuit on the motherboard.

A PCI PC Analyzer, also known as a , is a diagnostic tool used to troubleshoot computer motherboards that fail to boot. It intercepts BIOS diagnostic codes and displays them as hexadecimal numbers, allowing you to identify exactly where the startup process has failed. 1. Installation and Usage

Before installing, ensure the computer is powered off and you are properly grounded.