New PC build has no RGB lighting

Symptoms

• Fans, RAM, or other RGB components stay dark or white only
• RGB software doesn't detect the components at all
• Some RGB components light up but others don't
• Lighting worked briefly then stopped

Likely causes

• CommonRGB header cable not connected to the motherboardSeparate from fan power, RGB strips need their own cable connected to an RGB or ARGB header.
• CommonConnected to the wrong type of header (RGB vs. addressable ARGB)These use different voltages and connectors; plugging into the wrong one can prevent lighting or damage components.
• CommonRGB control software not installed or not detecting hardwareEach brand usually needs its own software to control lighting.
• PossibleConflicting RGB software from different brands running at onceMultiple lighting control apps can interfere with each other.
• PossibleMotherboard RGB header disabled in BIOSSome boards let you disable onboard lighting control entirely.

What to do

1. Check that RGB components have their dedicated RGB/ARGB cable connected to the motherboard, separate from power.
2. Confirm you're using the correct header type (3-pin ARGB vs 4-pin RGB) that matches the component, per the manual.
3. Install the motherboard or component manufacturer's RGB control software.
4. Close other RGB control software running in the background if you have components from multiple brands.
5. Check BIOS settings for anything related to onboard lighting or RGB headers to make sure it's enabled.
6. If lighting still doesn't work, test the RGB cable in a different compatible header to rule out a faulty header.

Tools and parts

• RGB control software (brand-specific)

Safety