[SOLVED] middle fan case spinning loudly

[jscardino]

usually every time I turn on my computer and it shows the dekstop for the first time my middle fan starts making a very loud noise and visually looks different compared to the top and bottom. whenever I turn on my computer and go straight to the bios, while I am still in the bios the fan is completely fine. once I leave bios and startup the computer the noise starts happening and then after 2 minutes or so the problem just fixes itself randomly. I dont know if my fan is get bad or there is dust or something in the way or there is a software problem causing it because in the bios of the computer it doesn't make any noise whatsoever. please help thanks

 

[Darkbreeze]

Are your front case fans connected to the motherboard fan headers or a hub or controller of some kind?

 

[Karadjgne]

Sounds like a bearing gone bad. That can and will change the sound of the fan, create its own noise and change the fan speeds, those motors are tiny and weak, so doesn't take much friction at all to change its speed. If it's daisy chained/split or in a hub, unless it's the primary fan, you'd not get any signal speeds for that fan.

 

[Darkbreeze]

Eh, I had fans that did this back when I was using my NZXT Grid v2 fan controller, sometimes. That is why I was thinking that it doesn't do it in the BIOS but once Windows loads it changes, because it is not getting sensor input before it's control software loads into memory but once it does something is different. Maybe it's like you say, but I feel like it's more likely something else. It would really help to know WHERE these fans are connected and WHAT is controller them.

Could just be a bad fan. Could be the PWM controller on it is bad or going bad. Could be a poor connection inside the fan electronics that goes away once it warms up and makes better contact but that doesn't seem right if it works fine for both long or short periods of time so long as it is in the BIOS and not in the Windows environment.

Without basic info, we are just guessing.

 

[Karadjgne]

Yes, just guessing. Really need to know where exactly the 3 fans plug into. Then maybe swap that fan lead with any non primary fan lead, to duplicate the fans group response. If it does the same thing or not, does the new 'middle' fan behave normal or not etc.

Can't be a successful detective without clues

 

[jscardino]

Eh, I had fans that did this back when I was using my NZXT Grid v2 fan controller, sometimes. That is why I was thinking that it doesn't do it in the BIOS but once Windows loads it changes, because it is not getting sensor input before it's control software loads into memory but once it does something is different. Maybe it's like you say, but I feel like it's more likely something else. It would really help to know WHERE these fans are connected and WHAT is controller them.

Could just be a bad fan. Could be the PWM controller on it is bad or going bad. Could be a poor connection inside the fan electronics that goes away once it warms up and makes better contact but that doesn't seem right if it works fine for both long or short periods of time so long as it is in the BIOS and not in the Windows environment.

Without basic info, we are just guessing.

there is no hub i am I think it is just a 3 in 1 adapter being plugged into the motherboard

 

[jscardino]

Are your front case fans connected to the motherboard fan headers or a hub or controller of some kind?

No it is just plugged into a adapter I believe there is no hub or controller that controls them.

 

[Karadjgne]

Ok, so a 3 way splitter. Follow the cables, the center fan should have only 3 wires. One other cable will be 3 wires, the primary has 4. Swap the center fan for the other 3wire.

That keeps the exact same conditions as far as fan speeds go. If the cable is bunk, the center fan will now spin as should, and the other fan will be funky. If the center fan remains messed up, it's the fan that's proven bunk.