Correcting the error "CPU Fan Error" when downloading

From time to time, every Windows user encounters various errors when turning on the computer, and "CPU fan error error press f1 to resume" is one of the most common. Let's figure out how to solve the problem.

Eliminating the error "CPU Fan Error" at boot.

"CPU Fan Error" - what a mistake

In short, this error is an indication of problems with the processor cooling system (fan). The BIOS asks you to press F1 to boot the OS and actually loads.

TIP. Sometimes the OS asks to press another key. More rarely, the message sounds like "Your CPU fan fail or speed too low."

However, pressing the button does not solve the problem, and the message is displayed again and again. This happens because the system automatically checks the performance of all components of the PC before booting, and if there really is a problem with the cooler, it is worth solving the problem to avoid overheating the processor and completely stopping the PC. But there are times when the OS is wrong. So what could be causing the problem?

We find out the cause of the error

Before you panic and disassemble the case, check the settings. If you just before the appearance of the error "CPU fan error" changed the rotational speed of the cooler in any programs or in BIOS, then return everything to its initial state. You can also try to choose the settings in which the error message disappears. We also recommend that you check whether the time is reset on the PC at startup. If it is reset, the reason may be a malfunction of the battery on the motherboard of the computer, which means resetting other CMOS settings. In this case, replacing the battery will completely solve the problem. If you disassembled the system unit before the appearance of an error (repaired, changed something or simply cleaned it), then the essence of the problem may be in the wrong connection of the fan (or in its disconnection). Tell about it in more detail.

As already mentioned, before booting the system, the BIOS evaluates the operation of each element of the computer, including the cooler. The number of revolutions is measured, and if they are zero, an error appears. Most often, the fan is simply connected to the wrong connector, and the system cannot detect it. In such a case, reconnecting the wire will be enough to fix the problem. The next reason may be a mismatch between the motherboard and the fan plug (for example, the plug is three-pin, and the connector on the board is four-pin). In this case, the cooler is working properly, but the system simply cannot determine the number of revolutions. The best solution in this case is the selection of suitable equipment. If there is no possibility, then we will explain how to ignore the error.

If all of the above reasons are excluded, then you should still get into the system unit and check if the cooler is working, if the wires do not impede the movement of the blades, if there is a lot of dust in it, etc. A simple cleaning of the cooler can also help. True, not for long. Here it is already important to decide whether it is time to simply change the processor cooling system.

How to get rid of the error

Having found out that the reason lies not in the settings, we try to remove the left cover of the system unit and visually evaluate the operation of the cooler. As mentioned above, we remove the elements that interfere with the rotation, if any, including dust. To do this, do the following:

  • Click on the cooling system from the motherboard or connector;
  • Carefully remove the system from the processor;
  • Turn off the fan;
  • Clean the radiator (the easiest way to do this is with a vacuum cleaner);
  • We count the cooler itself;
  • We fasten the fan to the radiator;
  • Install the cooling system on the board;
  • We connect the fan plug to the connector on the board (CPU FAN).

We try to turn on the computer (the lid can still not be put in place) and see if the “CPU fan speed” error has disappeared and the fan is working.

IMPORTANT. Recheck the presence of thermal paste on the radiator in order to avoid processor overheating when trying to turn on the computer.

Next, we check if the cooler is properly connected. The fan connector has three pins and must be connected to the three pins on the motherboard (usually under them is the CPU FAN signature). Power Fan and Chassis Fan connectors are optional. If the cooler is connected to them - this is the cause of the error. See if everything is in place.

TIP. Some system controllers are equipped with a special function for adjusting the rotational speed of the fan blades from the front panel. To enable this feature, you need to connect the cooler a little differently. Check the documents on the cooling system and the motherboard. The fan may have been connected incorrectly due to this.

How to ignore an error

In cases when you are sure that the cooler is working, you can ignore the error by correcting some values ​​in the BIOS. This can be done by turning off the cooler rotation tracking function. For this:

  1. Go to the BIOS.
  2. We are looking for the item Hardware Monitor.
  3. Select the section CPU Fan Speed.
  4. Select the state "N / A" (sometimes "Disabled").

Having done this, do not forget to periodically monitor the operation of the cooler yourself, since the system will not be able to warn you about overheating, which will cause damage to the processor. You can check the temperature in a special program in the “Computer - Sensors” section. We also advise you to correct some values ​​in the BIOS. For example, the threshold for automatically turning off the PC when overheating. We do this as follows:

  1. Go back to the BIOS.
  2. Select the item Hardware Monitor.
  3. Check the speed and the required number to start the cooler. If the activation threshold is too high, overheating can occur even before the cooling system starts. The average speed of the fans is 1500-2000 RPM (revolutions per minute).

Another option is to simply turn off the wait for pressing the F1 key. To do this, simply turn off the “Wait For F1 if Error” option (set to Disabled). In the new OS, you can find this option in the “Boot” section.

IMPORTANT. This item applies only to non-critical errors.

Occasionally the problem may lie in the motherboard. In this case, diagnosis is necessary, followed by repair or replacement.

Summing up, we note that the most common cause of this error is still a non-working or poorly working cooler. Replacing this item is easy and not expensive. In any case, it will be cheaper than buying a new processor in case of overheating.