The motherboard lights activate when the system starts.
The motherboard lights activate when the system starts.
You're observing a sequence of lights on your motherboard after powering on or restarting. This behavior is typically due to the BIOS/UEFI firmware detecting hardware changes and initiating a reset process. The red, orange, and green lights are part of the system's self-test routine, ensuring all components are functioning correctly before booting.
These indicators show the condition of parts such as the CPU, memory, graphics card (VGA), and boot drive during the initial startup phase. A light appearing after POST means an issue with that component. If it doesn’t power on properly, you can identify problems more easily—like a RAM or CPU fault. This feature works every time I turn on my PC.