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#1 | [Help] How to mod bios for fan control datum

Wed Apr 29, 2020 12:38 am (Last edited: Wed Apr 29, 2020 12:38 am)

I have an Asus Laptop UX481FL with AMI Bios. I want change the fan speed so it is more aggressive. How would I do this? I understand the inherit risks that come with modding the bios. I am also a noob with bios so please elaborate on the details. Thanks!

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#2 | RE: [Help] How to mod bios for fan control datum

Wed Apr 29, 2020 1:33 am (Last edited: Wed Apr 29, 2020 1:33 am)

Test with HWiNFO64 if you can control your fans and how many steps there are. The fan controls are a bit hidden inside the app but you'll find it, I'm sure!

Once you know how many speeds you can decide if you want to move forward. If it only has 2-3 speeds I wouldn't mess with the rpm but just edit the points where the fan goes on. They could be setup to 60c before the start working, you can change those 50c in most bios. Messing with rpm is not something I would do on laptops with minimal control (2-3 speed settings).

You can also try undervolting with Intel XTU and set the fans to go on and/or faster at a lower temperature in UEFI.

You'd have to extract your bios from your laptop, then extract that file and hunt for tables containing things regarding fan/thermals. If you can dump your bios and attach to a post I can have a look and let you know if anything can be changed and how I found it and how you can change it.

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