CPU Fan Error Press F1 to Resume - how to fix the error

If, when you turn on your computer or laptop, you see an error message CPU Fan Error Press F1 to Resume and you have to press the F1 key to boot Windows (sometimes another key is specified, and with some BIOS settings, it may be so, that pressing the key does not work, there may be other errors, for example, Your CPU fan fail or speed too low), in the guide below I will tell you, how to find out, what caused this problem and fix it.

Generally, the error text says that, that the BIOS diagnostic system detected problems with the CPU cooling fan. And often this is the reason for its appearance, however, not always. Let’s consider all the options in order.

Finding out the cause of the CPU Fan Error

At first, I recommend remembering, have you changed the fan (cooler) rotation speed using BIOS settings or programs? Or, can, the error appeared after, how did you disassemble the computer? Does the time on the computer reset after the computer is turned off?

In the case, if you have adjusted the settings of the cooler, I recommend either returning them to their original state, or find those parameters, in which the CPU Fan Error will not appear.

If your computer time is being reset, It means, that the battery on the computer’s motherboard is dead and other CMOS settings are reset, among other things. In this case, you just need to replace it, more about this in the instructions, the time on the computer is lost.

If you disassembled the computer for any purpose, that is, the probability, that you have connected the cooler incorrectly (if you turned it off), or they turned it off altogether. More on this later.

Check the cooler

If you are sure, that the error is not related to any settings (or your computer requires you to press F1 from the moment of purchase), it’s worth taking a look inside your PC, removing one side wall (left, if viewed from the front).

It should be checked whether the fan on the processor is not clogged with dust, whether any other elements interfere with its normal rotation. You can also turn on the computer with the lid off and watch, whether it rotates. If we observe any of this, fix and watch, has the CPU Fan Error disappeared.

On condition, that you do not exclude the possibility of incorrect connection of the cooler (for example, did you disassemble the computer or was there always an error), you should also check, how it is connected. Usually a wire with three contacts is used, which is connected to three pins on the motherboard (it happens, what 4), at the same time, they usually have a signature on the motherboard, similar to CPU FAN (there may be understandable abbreviations). If it is connected wrong, it’s worth fixing.

Note: Some system units have functions for adjusting or viewing the fan speed from the front panel, often, for their functioning, an ‘incorrect’ connection of the cooler is necessary. In this case, if you need to save these functions, carefully read the documentation for the system unit and the motherboard, because most likely, an error was made when connecting.

If none of the above helps

If none of the options helped fix the cooler error, that is, there are different options: perhaps, the sensor has stopped working on it and it should be replaced, perhaps even, that something is wrong with the computer’s motherboard.

In some BIOS variants, you can manually remove the error warning and the need to press the F1 key when booting the computer., however, you should use this opportunity only if you are absolutely sure, that this will not result in overheating problems. Usually the settings item looks like ‘Wait for F1 if error’. You can also (if there is a corresponding item) set the CPU Fan Speed value to ‘Ignored’.