The orange light on motherboard may indicate some issues with your computer. What causes the issue? How to fix the issue? This post from nerdcore computers tells you how to fix the orange light on motherboard. The motherboard is the key component of a computer system, connecting all the hardware components. However, some users see an orange light on motherboard. Depending on whether the orange light is static or blinking, it can indicate different types of problems. If it’s solid, it’s probably related to the RAM, while a blinking orange light indicates a problem with the power supply.