X870E Tomahawk - RGB doesn't come on when system powered up

edevans715fa02ec

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Apr 8, 2026
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Hi everyone! I just recently built a new PC using a X870E Tomahawk as the motherboard. Everything is working great, except now my RGB lighting does not come on automatically when I power on the system. This behavior seemed to start after I installed MSI Center and added in the Mystic Light feature. All the lighting works perfectly when I start it manually through Mystic Light once I've booted into Windows. When I press the power button, the lighting on the fans flashes for a split second but unless I go into Mystic Light and hit the "Apply" button they stay off. I have already tried resetting the BIOS to defaults and that had no effect. This only applies to the RGB on the fans, I have lighting on my DIMMs and M.2 card that seems unaffected. The PC itself is working great so this is kind of trivial but still, it would be nice to have my lighting working correctly, as it was when I first built the machine. Any ideas? Thanks!
 
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