I've just completed building my new PC and installed Windows, but I'm facing an issue with my case fans not spinning. The CPU fan and GPU fans are working fine, though. I checked the BIOS and noticed that the system fans are set to PWM at 60%, but I'm still not getting any response from the case fans. I connected the fan hub for the system fans to my motherboard, but since my motherboard doesn't have an RGB header and my PSU is non-modular, I can't plug in the SATA power. I'd really appreciate any help! Here are my PC specs:
- Intel i7 14700KF
- MSI Pro H610M-S Wifi DDR4 Motherboard
- RX 5700 XT
- Kingston Fury Beast 16 GB DDR4 RAM
- Kingston NV2 1TB SSD
- Peerless Assassin 120 SE Air Cooler
- MSI MAG A650BN PSU (Non-modular)
- Antec Flux Case
2 Answers
Hey! Make sure you're connecting a fan to the first port on the hub since that's usually the one that sends the PWM signal. It needs a fan plugged in there to work properly. It sounds like you've done that, but double-checking never hurts!
Are you not powering the case fan hub with a SATA connection? Without electricity, the fans won't run at all. You can only connect the case fans directly to the motherboard headers, but be careful not to plug too many into one header, or you risk burning it out. Also, I'm not sure how well your motherboard will handle that i7; it might struggle even with an i5. Did you think about that when picking your parts?
Are there any alternative ways to power the fans without using the SATA cable? Can I use a different connection?

Yep, I’ve plugged in fans to all the slots!