Fix CPU fan speed error detected on Windows 10/11 like a PRO

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Updated onOctober 4, 2023

updated onOctober 4, 2023

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Sometimes while booting your PC, theBIOSmay displayCPU fan speed error detectedmessage on the screen. Thiserrorappears on custom built PCs and most of the time can be fixed with a few tweaks.

Are you bothered by the CPU Fan Speed error detected while bootingWindows? Try configuring (ignoring) Fan Speed Low Limit inBIOSsettings. That should stop the error message from reappearing. If it doesn’t, make sure to check your Pump connection. Finally, update yourBIOSif updates are available.

Read about each step below.

How do I stop CPU fan speed error detected while booting Windows

1. Ignore CPU Fan Speed Low Limit

A quick fix for this issue appears to be setting the CPU Fan Speed Low Limit option in theBIOSto ignore. Users have reported that ignoring the fan speed limit has fixed the issue for them. Here is how to do it.

Enter theBIOS

First, you need to enter theBIOS/ UEFI. You can enterBIOSthrough different ways but the easiest one is to enter the specified key on your keyboard when the PC starts to boot.

Below instructions are for Windows 10 devices. In case it doesn’t work you can easily find the right key for your desktop with a bit of search.

Ignore CPU FAN Speed

Save the changes and exit theBIOSscreen. Restart the PC to see if the CPU fan speed error detectederroris resolved.

2. Check your Pump Connection

If you are new to the custom PC build world, you may end up making some obvious mistakes. One of which is connecting the pump connector to CPU fan header. This may result in CPU fan speed error.

The right way to do is to connect the Pump to a Molex connector through an adapter. You may need to purchase the adapter separately.

Open your build and make sure the 2 fans on radiator are connected to Y fan cable adapter and CPU fan header. In case you don’t have Y fan cable adapter, you can connect one fan to the CPU header and other to theCPUoptional (opt) header.

3. Check for BIOS Update

If yourCPUfans are connected right and you have ignored the warning and the message still appears, check for any pendingBIOSupdates.BIOSupdates usually come with Windows updates, you can check for the latest version on the motherboard manufacturer’s website.

Fix CPU fan speed error detected on Windows 10/11 like a PRO#

How do I stop CPU fan speed error detected while booting Windows#

1. Ignore CPU Fan Speed Low Limit#

2. Check your Pump Connection#

3. Check for BIOS Update#

Fix CPU fan speed error detected on Windows 10/11 like a PRO

How do I stop CPU fan speed error detected while booting Windows

1. Ignore CPU Fan Speed Low Limit

2. Check your Pump Connection

3. Check for BIOS Update