How to fix "CPU Fan not detected" errors and warnings
66In this video I'm talking about what to do if you've built a PC but then you can't install Windows or you can't boot your machine because of a warning about the CPU fan speed not being detected.
This is often a simple fix luckily. If you've installed an all-in-one CPU cooler, then chances are you connected the pump head to the AIO pump header on the motherboard. This leaves the CPU Fan header empty, which some motherboards don't appreciate! So the solution is either:
1 - unplug the AIO pump cable and connect it to the CPU fan header instead
2 - head into your BIOS settings and set the CPU fan monitor to "ignore"
Either of these options will work and should solve your problem.
Here are some other videos you might find useful:
Common Mistakes You Might be Making with Your PC Fan Setup! PC airflow tips and tricks https://youtu.be/uPIMv30Vs3w
Are you making these mistakes with your RAM? https://youtu.be/ZeUgMODOfOo
Avoid these problems with your all in one CPU cooler https://youtu.be/nVkN8diBIAE
Don't make these mistakes with your NVMe SSD installation - NVMe tips and tricks https://youtu.be/zjSn64vh_Vk
Where should you put your AIO radiator? https://youtu.be/qQcyYHGtArs
How to choose the right PSU (which Power Supply Unit you need and how to install it) https://youtu.be/dNseVxqqar0
Push Pull mistakes to avoid with all in one coolers https://youtu.be/_gA71wF9Ewc
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