PC SupportPC Case Fan Help Please
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PC SupportPC Case Fan Help PleasePosted:
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One of my case fans has a mind of it's own. So I built my new PC tonight, and every time I turn it on, all RPM's start the same, then, just after the BIOS check, one of my fans jumps straight up to around 2600RPM
https://i.imgur.com/f3garvS.png My fans are all magnetic levitation, and every time I check the BIOS, everything seems good to go, but then this one fan takes over, and whoosh, all of a sudden I'm in a wind tunnel, it's very annoying, any advice? Edit: After posting this, I decided to do some investigating on my own. it was my rear exhaust fan that was doing this, and I noticed it after it was louder than the rest, even though it was the same exact fan as the rest, plugged into a 4-pin like the rest, so I took my two rear exhaust fans and swapped headers, sure enough my rear exhaust was fine then, but the other exhaust became the problem fan. So I grabbed a splitter, and split both fans between the one good header, and now all is nice and quiet, and my temps actually improved due to less negative air pressure, I'm assuming the end problem was the pin that controls speed was malfunctioning. I waited a long time to build my own rig how I want to do it, and I'm definitely not sending this board back for one messed up header even though it's new, it's an easy enough fix lol, but to any who read this, that still might have ideas to try, I'd be down to hear them lol |
#2. Posted:
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Whichever header the problem fan is plugged in to might just be set to 100% fan speed in the BIOS or something.
4-pin fans, so that means PWM. They'll typically auto adjust, but it is possible that one of them is locked to 100%, which would make sense since you're around the max RPM range for a Corsair ML fan. Check BIOS, or maybe download SpeedFan and try that, see if you can get them all running around 50%, that should be a good mix of silence and performance. |
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#3. Posted:
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21 wrote Whichever header the problem fan is plugged in to might just be set to 100% fan speed in the BIOS or something. Yea I added an edit to my initial post that it was a bad header, and speedfan was useless, it wouldn't even recognize that I had fans plugged in, I had speedfan on every system I've ever had, this is the only one it refuses to work on, and in the advanced configuration menu, the only two detected variables were my M.2, and my GPU, so I thought that was kinda weird. Even using the auto setup utility in BIOS, where it starts all fans on max and slowly turns them down to measure all the temp variables, the rest changed, but that one stayed on max, so I unplugged the misbehaving one, then the good one, stuck them both on a splitter and into the good header, now all adjusts just fine without any extra software, BIOS control works perfect, it's just that header, I tried it with other fans too and they all ramped to max, so yep, I'm thinking something is wrong with the pin that actually reads the speed so by default it's maxing out as a precaution. Either way problem was solved lol |
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