Vibrating fan noise

[VACARA]

Hello , im currently having issues with my stock nzxt case fans in my h440 case. Every time i turn my computer on i have noticed the front fans start making this horrible vibrating noise. The only way i can temporarily stop this is to take off the front panel of my case and flick the fans for them to start spinning in their normal mode again.. any suggestions how i can fix this?

[Minsekt]

are they connected to your mobo or are you using a fan controller? do they stop spinning completely and making these noises?

[Heesleemer]

I see one of 2 options, the later being what I think is happening.

1. the fans are hitting against something.

2. teh fans are not getting enough power to start them up 100% thus spinning at a non-designed voltage/rpm etc... causing ticking, and when you flick it, it starts spinning at the correct speed.

 

Mess with the fan controls add a little bit more power/rpm and see what happens 

[EdInk]

The fans are not getting enough power to start them up 100% thus spinning at a non-designed voltage/rpm etc... causing ticking, and when you flick it, it starts spinning at the correct speed.

 

Mess with the fan controls add a little bit more power/rpm and see what happens 

The fan curve in your BIOS setting may have been set to low so the value is below the start voltage required for your fan.