A BIOS reset returns fan settings to defaults, which can change behaviour that had nothing to do with hardware. Check the settings before suspecting a fault. A fan running differently after an update is usually a configuration change rather than a failure.
Fans behaving strangely right after a BIOS update or a CMOS clear is not automatically a hardware failure, and reaching for a replacement before checking settings is how a working fan or hub gets returned for no good reason. A BIOS reset fan behaviour check comes first, because a reset silently returns settings to default, and default is not necessarily what you configured.
A BIOS reset returns fan curves, header modes, and any custom settings you had configured back to the board's factory defaults, which can genuinely change how fans behave with no physical change to the hardware at all. Check the current settings against what you remember configuring before suspecting a fault in any AsiaHorse fan or the R349 ASH-S1 hub. A fan running noticeably differently right after an update is far more often a configuration change than an actual failure.
A BIOS reset clears fan curves back to whatever the manufacturer shipped as default, returns each header's mode - PWM or voltage - to its factory setting, and discards any custom profiles you had built up over time. None of this touches the physical fans or their wiring in any way; it is purely a settings-level change happening entirely inside the board's firmware.
Fans suddenly running louder, quieter, or at a different speed than before, with no physical change made to the build at all, naturally suggests something has broken - it is a reasonable first assumption, and it happens to be wrong more often than it is right in exactly this scenario.
The header mode and the curve assigned to each individual fan connection are precisely what a reset returns to default, so reviewing both for every fan header is the logical starting point rather than assuming a component has failed. Compare what you find against what you remember setting up originally, checking each header individually rather than assuming they all reset identically.
After a BIOS update, after deliberately clearing settings to try to resolve an unrelated problem, and occasionally following a power event that interrupts the board unexpectedly - all three scenarios return fan settings to default without you necessarily intending that specific outcome.
Photographing the fan control screen in the BIOS before making any changes is genuinely worth the minute it takes, since it gives you something concrete to compare against later if a reset - deliberate or accidental - ever happens down the line. This habit turns "I think it used to be different" into an actual before-and-after comparison.
Lighting settings usually live in separate software running from within the operating system rather than in the BIOS itself, so a BIOS reset generally leaves addressable lighting configurations untouched even while fan settings return to default - worth knowing so you are not troubleshooting a lighting change that never actually happened.
Once the header mode and curve for every affected fan have been confirmed correct, configuration is genuinely ruled out as the cause, and the connection itself or the fan hardware becomes the next area worth examining. Replacement hubs and mounts, if it genuinely comes to that, are stocked in the case accessories category, with matching leads found in the cable solutions range.
Yes - if every setting checks out and a genuine hardware fault remains, the 1 Year Local Warranty on any AsiaHorse fan or the ASH-S1 hub still applies exactly as it would have before the reset happened. Noting that the fault was confirmed after ruling out a BIOS reset, rather than assumed the moment fans behaved oddly, is worth mentioning to support - it shows the configuration angle has already been checked and saves them asking the same question first.
Fan curves, header modes, and any custom settings you had configured, all of which return to the board's factory defaults rather than staying as you set them.
Because fans suddenly behave differently with no physical change to the build, which naturally suggests something has broken even when nothing physically has.
The header mode and the assigned curve for each individual fan connection, since those are precisely what a reset returns to default.
After a firmware update, after clearing settings to resolve an unrelated issue, and occasionally following an unexpected power event.
Very much so - photographing the fan control screen before making changes gives you something concrete to compare against later.
Usually not - lighting configurations typically live in separate software rather than the BIOS, so they often remain unaffected by a reset.
Then configuration is ruled out as the cause, and the connection or the fan hardware itself becomes the next area worth examining.
Fans behaving differently after a BIOS change? Check fan control accessories in the case accessories range and connection options in the cable solutions category.
Fan curves, header modes, and any custom settings you had configured, all of which return to the board's factory defaults rather than staying as you set them.
Because fans suddenly behave differently with no physical change to the build, which naturally suggests something has broken even when nothing physically has.
The header mode and the assigned curve for each individual fan connection, since those are precisely what a reset returns to default.
After a firmware update, after clearing settings to resolve an unrelated issue, and occasionally following an unexpected power event.
Very much so - photographing the fan control screen before making changes gives you something concrete to compare against later.
Usually not - lighting configurations typically live in separate software rather than the BIOS, so they often remain unaffected by a reset.
Then configuration is ruled out as the cause, and the connection or the fan hardware itself becomes the next area worth examining.
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