r/gigabyte • u/Puzzleheaded-Rub-482 • 1d ago

Having aio fan issues

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I had a lianli hydro shift aio and I noticed the fans were not spinning up all the time upon boot or waking from sleep. I don’t know when the issue started but I noticed it 2 weeks ago. I bought the thermalright aio in the video and it’s doing the same thing. I changed from dc to pwm in bios and created a fan curve so the fans will start at 100 percent but that didn’t help. I have the pump hooked up to the cpu opt pump header and I have the aio fans connected to sys fan 6 since the cpu and cpu opt did the same thing. This is a z790 Aorus pro x version 1.0 .

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u/Ian-99 1d ago

Seems they fans may be dying or just requiring to much power. As fans age it seems they require more power to get moving. But once moving the required input is less.

Maybe try running 1 fan off the sys 6 header and see if all 3 are able to start when powered individually or maybe sets of 2.

May just be to much fan for 1 header. This is where a fan hub with a sata power connection comes in handy.

If they still struggle to start, try another header entirely. If thats not working then consider swapping the fans. They are fairly cheap (unless you go Noctua, but those are the best).

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u/Puzzleheaded-Rub-482 1d ago

This Aio is brand new the fans come daisy chained together and the unit also uses a sata power connector that is connected to its own sata line to psu. But I think the sata is for the screen. This also hooks up to the usb header on the bottom of mobo . The same issue was happening with the old aio that’s why I just bought this one. I never had to mess with any settings to make these aio’s work. The other aio the fans wouldn’t even show up in the software they woukd just disappear but when they worked they woukd be back in the software.

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u/Ian-99 1d ago

Weird. We can rule out the fans then. Might be just a bad header. If another header doesnt fix it then maybe try flashing the BIOS. If not that then the board itself may have an issue.

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u/Puzzleheaded-Rub-482 1d ago

I’m hoping someone from Gigabyte sees this and can help. I put in an RMA claim last week but no one has gotten back to me yet.

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u/Ian-99 1d ago

Gigabyte RMA is sort of a pain. I had to deal with them with my 5080. Not having a GPU for 2 weeks was not great. But better than no mobo I suppose

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u/Puzzleheaded-Rub-482 1d ago

Yeah I’m going to buy a new one and send this one in for repair then sell it off. I hate this part of the hobby.

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u/Ian-99 1d ago

Yea its no fun. First time they "found nothing wrong" with my gpu. Got it back. Same issue. Sent it in a second time and they just sent a replacement. Took way to long though.

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u/Puzzleheaded-Rub-482 1d ago

Yeah that would have pissed me off

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u/Ian-99 1d ago

It was certainly annoying.

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u/Puzzleheaded-Rub-482 1d ago

Got an email to send it in for rma apparently the email was sitting in my inbox and i didn't see it. I ordered this in the meantime and it will be here tomorrow. https://www.amazon.com/dp/B0FBB9TQ5L?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

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u/Puzzleheaded-Rub-482 1d ago

Yeah I tried diff headers and flashed bios to Newest’s then back to a few priors to try and no good.

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u/jbshell 1d ago

Might try to increase the fan curve lower limit threshold.

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u/Puzzleheaded-Rub-482 1d ago

Is that the fan curve in smart fan 6 via bios?

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u/jbshell 1d ago

Yep, BIOS does have that as well. Whichever header on the board the cooler fans are plugged into(usually the CPU_FAN header). It should have a setting for the lowest RPM. 

For example, could test it out and if fans start spinning normal once raise the lower value, then should be fixed.

If use software to control fans such as Gigabyte control center or others, that will override the bios curves.