[SOLVED] Cpu fan keeps turning on and off with disconnect sound

Dec 17, 2020
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I have recently upgrade my motherboard and cpu and since I have installed both (Ryzen 7 3700 X, MSI B450 Tomahawk Max) my cpu fan will start to connect and disconnect within a second and will repeat about every 6 seconds. The RGB lights and the fan turn off for a split second and I hear a disconnect sound every-time it happens. Does anyone know how to fix this at all?
 
Dec 17, 2020
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10
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Connected to Motherboard CPU Fan header?
Set up in BIOS -PWM or DC?
Fan curve adjusted in Bios?
I am pretty sure it’s connected to the CPU Fan header. I’m quite new to building pcs so I’m not too sure which BIOS settings I want. Do I want it as PWM or DC? And how do I adjust fan curve
 

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