CPU风扇不运行是计算机技术人员每天收到的最常见的投诉之一。尽管问题看起来很简单，但解决方案却并非如此。

在笔记本电脑上，CPU风扇通常由 3V 或 5V 供电，而在台式机上，它由电源单元或 PSU(Power Supply Unit or PSU)提供的 12V 供电。风扇接头是主板上连接风扇的端口。大多数风扇都有三根线/针。一个用于供电（红色），第二个用于中性（黑色），第三个用于控制风扇速度(fan speed)（绿色）/（黄色）。然后BIOS使用步进机制为CPU风扇供电。当设备温度上升到阈值点以上时，风扇通常会启动。风扇速度会随着温度和CPU负载的增加而增加。 

冷却(Cooling)对于您的机器在不过热的情况下发挥最佳功能至关重要。这是通过使用通风设备、冷却剂以及最常见的冷却风扇来实现的。因此(Hence)，风扇不运行是一个令人担忧的原因。

对于计算机，PSU风扇、CPU风扇、机箱/机箱风扇和GPU风扇都是冷却风扇的示例。用户报告说，当他们的CPU风扇停止旋转时，机器会过热并抛出BSOD。由于热监控系统，机器会关闭。它可能会在一段时间内无法打开，因为它可能会在启动过程中遇到风扇错误。本文将解决该问题并演示如何对其进行故障排除。它包括“如果您的CPU(CPU)风扇未运行”场景的基本解决方案。

安装在处理器上的CPU风扇应该对其进行冷却，以防止其过热并造成损坏。当您第一次打开计算机屏幕时，您会听到它产生的噪音。CPU风扇故障是影响所有台式机和笔记本电脑的常见问题。

如果出现以下任何/所有问题，原因可能是CPU风扇故障：

您可以安装电脑检查工具来检查电脑硬件和软件是否正常工作。该应用程序会在发现CPU风扇不工作时通知您。

当CPU风扇停止工作时，可能会导致许多问题，例如：

1.电脑经常意外关机(The computer often shuts down unexpectedly)——电脑经常在没有警告的情况下关机，导致设备故障或数据丢失。

例如，如果您的机器意外发生故障，您将没有机会保存数据。此外，当您重新启动计算机时，您的所有数据都将丢失。

2. CPU 风扇停止工作(The CPU fan stops working)- 如果发生这种情况，可能会损坏CPU和主板，导致机器无法启动。

另请阅读：(Also Read:) 如何修复计算机自动关闭(How to Fix Computer turns off automatically)

这可能是由于以下列出的多种因素造成的：

1.BIOS问题(BIOS issues)

到目前为止，ATX主板已经能够在BIOS设置中跟踪CPU风扇温度和速度。因此，无需物理打开设备外壳来检查CPU风扇。相反，在启动设备时，您可以输入BIOS设置来执行此操作。

有时，BIOS可能无法跟踪CPU速度和温度，导致您认为CPU风扇已停止运行。

这个问题很可能是由

一种。CPU风扇的电源线接错了：(The CPU fan’s power cord is incorrectly attached:) 例如，如果你把CPU风扇接到主板上机箱风扇的电源插头上，它就不会被你的BIOS风扇监控，并被标记为不可用。

湾。接触问题(Contact issue)– 如果CPU风扇的电源线与主板接触不良，BIOS会报告CPU没有运行。

C。CPU风扇设计不良：CPU风扇(Poor design of CPU fan:)也(CPU) 有可能设计不良及其自身故障的原因。

2 、CPU风扇安装错误(Faulty Installation of CPU Fan)

CPU安装在电脑主板上，CPU风扇(CPU)安装在CPU上。如果没有正确安装CPU风扇，它将无法正常工作。

3 、CPU风扇有(in the CPU fan )灰尘(Dust) 

如果您的计算机使用了很长时间，它可能会产生大量灰尘。如果CPU风扇积尘过多，会降低CPU速度，并可能导致CPU风扇故障。您必须定期清洁CPU风扇，以确保其继续正常运行。

4. CPU风扇轴承卡住(CPU Fan Bearing Jammed)

如果CPU风扇停止转动，可能是由于长时间使用导致CPU的轴承出现拥塞。(CPU)这是大多数用户的常见问题，每隔一两年就会出现一次。

5. CPU风扇故障(Faulty CPU Fan )

CPU风扇是过度使用后可能会损坏的组件。当CPU风扇损坏时，它将停止旋转。

由于冷却对您的计算机至关重要，因此一旦您意识到“CPU 风扇不运行”问题，就必须解决它。

由于CPU风扇没有扭矩，如果被手指或碎屑阻挡，它可能会停止运行。即使您清除了灰尘，风扇也会停止运转以防止自身燃烧。要纠正他的问题，请重新启动您的设备。

由于CPU风扇提供的扭矩很小，因此通向风扇电机的电线可能会阻止叶片旋转。拆下风扇并检查是否有任何电线等卡在风扇叶片中。为避免电线粘在风扇叶片上，请用环氧树脂将风扇电线固定在侧面。

灰尘(Dust)总是堵塞风扇。由于这些风扇不会产生很大的扭矩，因此堆积物可能会撞击风扇叶片并阻止它们旋转。您可以通过拆卸风扇来清洁风扇。如果您不确定如何操作，请拿起一罐压缩空气，然后将其从风扇通风口喷出。

注意：(Note:) 确保(Make)风扇不会达到非常高的RPM（每分钟转(Revolutions)数），因为它会损坏。

确定主板是否导致风扇问题的唯一方法是使用正常工作的CPU风扇测试您的 PC。如果它不旋转，则需要更换主板。

如果您有必要的电气技能，您还应该检查CPU风扇电压输出是否在3-5V（笔记本电脑）或12V（台式机）之间。您的CPU将无法在零电压或低于最低要求电压的情况下运行风扇。在这种情况下，您可能也需要更换主板。

确保(Make)主板与电源单元和其他组件兼容；否则，您将不得不花费更多来更换所有这些。

另请阅读：(Also Read:) 如何删除或重置 BIOS 密码(How to Remove or Reset the BIOS Password)

更换主板并非在所有情况下都是可行的解决方案。由于PSU集成在笔记本电脑的主板中，更换主板即可解决问题。但是，如果您使用的是台式机，如果 5V 或 12V 电源不可用，您的风扇将无法工作。因此，您需要更换电源装置。

如果您听到哔哔声，或者多个组件停止工作（显示器、风扇、键盘、鼠标），或者机器启动时间很短然后突然关闭，则需要更换PSU 。

注意：(Note:) 确保(Make)您获得的PSU具有与您要更换的电源端口相同的电源端口；否则，它将无法与计算机的所有组件一起使用。

如果您在另一台计算机上尝试过您的风扇并且它无法运行，那么您需要购买一个新的。为了在购买新风扇之前消除任何疑虑，请仔细检查风扇端子是否接收到所需的电源。

您的风扇由BIOS供电。重置它将消除错误配置并恢复风扇的功能。

如果您不知道如何重置BIOS，请按照以下步骤操作：

1. 关闭(1. Turn off)电脑。

2. 要访问BIOS配置，请按电源开关(power switch)，然后快速按F2。

3. 按F9重新配置您的 BIOS。

4.按Esc或F10选择(F10. )保存并退出。(save and exit)然后，按 Enter(Enter)以允许计算机重新启动。

5. 验证风扇是否工作。

CPU风扇可能会因过度摩擦而停止运转，因为轴承需要上油才能正常工作。因此(Hence)，您应该用机油润滑它并使其恢复活力。

您需要卸下CPU风扇的顶部，然后在风扇轴上滴一两滴机油。它应该提高它的效率。

另请阅读：(Also Read:) 修复 Windows 10 的 CPU 和磁盘使用率过高问题(Fix High CPU and Disk usage problem of Windows 10)

要测试您的风扇，请尝试使用单独的风扇接头（主板上连接到风扇的端子）。如果它旋转，则主板或电源单元可能是问题的根源。

您应该尝试使用知名制造商的风扇。如果它有效，则问题很可能与您的粉丝有关。

如果有万用表，请用万用表检查红色和黑色端子之间的电压。如果不是3-5V或12V，则主板或电源存在电路故障。

所有计算机上都提供设备(Device)诊断工具。我们将使用这些工具检查CPU风扇，如下所示：

1. 按电源(power )按钮关闭显示器。要访问系统( system) 引导选项(boot options)，请立即按F12。

2.从引导菜单屏幕中选择诊断选项。( Diagnostics)

3. PSA+ 窗口将出现，显示在计算机上检测到的所有设备。诊断程序将开始对所有这些运行检查。

4、本次测试结束后，会出现提示“是否要继续记忆测试。” 选择(” Choose)否( No)。

5. 现在，32 位诊断(32-bit Diagnostics)将启动。在这里，选择自定义测试(custom test)。

6. 以风扇(fan)为 设备(device)运行测试。测试完成后会出现结果。

如果您收到类似“风扇 - [处理器风扇] 无法正确回答(Fan-The [Processor Fan] failed to answer correctly,’)”的错误消息， 则表示您的风扇已损坏，您需要一个新的。

大多数情况下，“ CPU风扇接触不良”问题是由风扇本身触发的，这会导致其停止运行。可能是因为它的质量不好或风扇损坏。为避免此类麻烦，为您的机器购买合适且可靠的CPU风扇是有益的。

ADATA、Intel、Corsair、DEEPCOOL、COOLERMASTER等知名CPU风扇制造商今天都有。您可以从这些商店获得具有优质保证的值得信赖的CPU风扇。

为避免购买不合适的风扇，您应先检查主板上的CPU。

在购买CPU风扇时，要考虑的最关键因素之一是它发出的热量。散热良好的风扇可防止CPU过热，从而防止机器意外关机或损坏。

常见问题 (FAQ)(Frequently Asked Questions (FAQs))

Q1。我不知道 Windows 10 中的“如何将 BIOS 重置为默认值”。请帮忙。(Q1. I don’t know ‘how to reset the BIOS to default’ in Windows 10. Please help.)

如果您不知道如何在Windows 10中重置(Windows 10)BIOS ，请按照以下步骤操作：

1. 转到开始(Start)->电源(Power)，按住  Shift键，然后单击重新启动(Restart)按钮。 

2.然后转到疑难解答(Troubleshoot)->高级选项(Advanced Options)-> UEFI固件设置(UEFI Firmware Settings)，单击重新启动(Restart)，您将进入BIOS设置屏幕。

或者

或者，您可以通过在启动屏幕上按相应的键来正常重新启动机器并引导进入BIOS设置。(BIOS)不同(Different)的计算机制造商使用不同的热键，例如F12、Del、Esc、 F8 、 F2 等。

1. 在BIOS设置屏幕中，使用计算机键盘上的箭头键找到BIOS设置默认选项。它将位于BIOS选项卡之一下。

2. 找到Load Setup Defaults选项后，选择它，然后按Enter开始将Windows 10中的BIOS重置为出厂默认设置。

3. 最后，按F10退出并保存您的BIOS。您的机器将自行重启。

注意：(Note:)重置主板跳线并移除，然后重新插入CMOS电池是 在Windows 10中重置(Windows 10)BIOS的另外两种方法。 

Q2。什么是 BIOS？(Q2. What is a BIOS?)

BIOS（Basic Input/Output System）是一种用于启动计算机的固件（计算机程序）。设备微处理器使用它在系统打开后启动系统。要启动计算机，它必须具有BIOS 。

如果您的CPU风扇没有运行，这可能是一个令人沮丧的问题，因为它可能会在您的设备上引发一系列故障和错误。因此，您必须检测并解决此问题。

受到推崇的：(Recommended:)

我们希望本指南对您有所帮助，并且您能够修复 CPU 风扇不旋转(fix CPU Fan not spinning)。如果您发现自己在此过程中遇到困难，请通过评论与我们联系，我们将为您提供帮助。

The CPU fan is not runnіng is оne of the moѕt common complaintѕ that computer techniciаns receive on a daily basis. Αlthough the problem seems straightforward, thе solution is nоt.

On the laptop, the CPU fan is normally powered by 3V or 5V, while on the desktop, it is powered by 12V from the Power Supply Unit or PSU. The fan header is the port on the motherboard where the fan connects. The majority of fans have three wires/pins. One is for voltage supplied (red), the second is for neutral (black), and the third is for controlling fan speed (green)/(yellow). The BIOS then uses a stepped mechanism to power the CPU fan. As the device temperature rises above the threshold point, the fan normally kicks in. The fan speed increase as the temperature and CPU load rises. 

Cooling is essential for your machine to function at its best without overheating. This is accomplished by using ventilation devices, coolants, and, most often, cooling fans. Hence fan not running is a cause of concern.

For a computer, PSU fan, CPU fan, case/chassis fan, and GPU fan are all examples of cooling fans. Users had reported that when their CPU fan stopped spinning, the machine would overheat & throw a BSOD. Because of the thermal monitoring system, the machine would shut down. It may not turn on for some time as it could encounter a fan error during the boot process.   This article will address the issue and demonstrate how to troubleshoot it. It includes basic solutions for the scenario ‘if your CPU fan is not running.’

The CPU fan mounted on the processor is supposed to cool it to prevent it from overheating and causing damage. When you first turn on the screen of your computer, you can hear a noise produced by it. CPU fan failure is a common issue that affects all desktop and laptop computers.

If any/all of the following problems occur, the cause could be a malfunctioning CPU fan:

You can install a computer inspection tool to check if the computer hardware and software are working properly or not. The app will notify you if it finds that the CPU fan is not working.

When the CPU fan stops working, it may cause many issues, like:

1. The computer often shuts down unexpectedly – The computer often shuts down without warning, resulting in device malfunction or data loss.

For example, if your machine breaks down unexpectedly, you will not get a chance to save your data. Also, when you restart your computer, all of your data will be lost.

2. The CPU fan stops working – If this happens, it can cause damage to the CPU as well as the motherboard, rendering the machine unbootable.

Also Read: How to Fix Computer turns off automatically

This could happen because of a variety of factors as listed below:

1. BIOS issues

So far, ATX motherboards have had the ability to track CPU fan temperature and speed in BIOS settings. Thus, there’s no need to physically open the device case to check the CPU fan. Instead, while booting your device, you can enter BIOS settings to do so.

Sometimes, BIOS may not be able to track CPU speed and temperature, leading you to believe that the CPU fan has stopped running.

This issue is most likely caused by

a. The CPU fan’s power cord is incorrectly attached: For example, if you connect the CPU fan to the case fan’s power plug on the motherboard, it will not be monitored by your BIOS fan and marked unworkable.

b. Contact issue – If the CPU fan’s power cord makes bad contact with the motherboard, the BIOS would report that the CPU is not running.

c. Poor design of CPU fan: There’s also a possibility that the CPU fan is of poor design & the cause of its own failure.

2. Faulty Installation of CPU Fan

The CPU is installed on the computer motherboard, and the CPU fan is installed on the CPU. If the CPU fan is not installed correctly, it will not work properly.

3. Dust in the CPU fan

Your computer may produce a lot of dust if it has been in use for a long time. If the CPU fan collects a lot of dust, it will slow down the CPU speed and possibly cause CPU fan failure. You must clean the CPU fan regularly to ensure that it continues to run normally.

4. CPU Fan Bearing Jammed

If the CPU fan stops running, it may be that the CPU’s bearing has gotten congested due to a long period of usage. This is a common issue with most users, which occurs every one or two years.

5. Faulty CPU Fan

The CPU fan is a component that can break after excessive use. When the CPU fan is damaged, it will stop spinning.

Since cooling is crucial for your computer, as soon as you become aware of the ‘CPU fan not running’ problem, you must address it.

Since the CPU fan has no torque, it can stop functioning if obstructed by a finger or debris. Even after you remove the dust, the fan will stop running to prevent itself from burning. To rectify his issue, restart your device.

Since CPU fans provide little torque, the wires leading to the fan motor may prevent the blades from rotating. Remove the fan and inspect it for any wires etc., lodged into the fan blades. To avoid having wires being stuck to fan blades, secure the fan wire to the side with epoxy.

Dust clogs up fans all the time. Since these fans don’t generate a lot of torque, the build-up could hit the fan blades and keep them from spinning. You can clean your fan by disassembling it. If you’re not exactly sure how to do it, grab a can of compressed air and squirt it through the fan vents.

Note: Make sure the fan doesn’t reach very high RPM (Revolutions per minute) as it will get damaged.

The only way to tell for sure if the motherboard is causing the fan issue is to test your PC with a functioning CPU fan. If it doesn’t spin, the motherboard will need to be replaced.

You should also check whether CPU fan voltage output is between 3-5V(for laptops) or 12V(for desktops) if you have the prerequisite electrical skills for it. Your CPU will not be able to operate the fan with zero or less than the minimum required voltage. You may need to replace the motherboard in this case too.

Make sure the motherboard is compatible with the power supply unit and other components; otherwise, you’ll have to spend even more to replace all of these.

Also Read: How to Remove or Reset the BIOS Password

Replacing the motherboard isn’t a feasible solution in all scenarios. Since the PSU is integrated into the motherboard of laptops, replacing the motherboard would solve the issue. But, in case you are using a desktop, your fan would not work if the 5V or 12V supply is not available. As a result, you’ll need to replace the power supply unit.

If you hear beeping sounds, or if more than one component stops working (monitor, fan, keyboard, mouse), or if the machine starts for a short time and then shuts down abruptly, the PSU needs to be replaced.

Note: Make sure the PSU you get has supply ports identical to the one you’re replacing; otherwise, it won’t work with all the components of the computer.

If you’ve tried your fan on another computer and it doesn’t run, then you need to get a new one. To eliminate any doubts before buying a new fan, double-check that fan terminals are receiving the required power supply.

Your fan is powered by the BIOS. Resetting it will remove misconfigurations and restore the functioning of the fan.

If you don’t know how to reset the BIOS, follow these steps:

1. Turn off the computer.

2. To access BIOS configuration, press the power switch and then quickly press F2.

3. Press F9 to reconfigure your BIOS.

4. Select save and exit by pressing Esc or F10. Then, hit Enter to allow the computer to restart.

5. Verify if the fan works.

The CPU fan may stop running due to excessive friction as the bearing needs some oiling to function properly. Hence, you should lubricate it with machine oil and get it back to life.

You will need to remove the top of the CPU fan and apply one or two drops of machine oil to the axis of the fan. It should improve its efficiency.

Also Read: Fix High CPU and Disk usage problem of Windows 10

To test your fan, try a separate fan header (terminals on your motherboard that attach to your fan/s). If it spins, the motherboard or power supply unit can be the source of the problem.

You should try using a fan from a renowned manufacturer. If it works, the issue is most likely with your fan.

Check the voltage between the red and black terminals with a multimeter, if you have one. If it’s not 3-5V or 12V, there’s a circuit flaw with the motherboard or power supply.

Device diagnostic tools are available on all computers. We are going to check the CPU fan using these tools, as follows:

1. Press the power button to switch off your monitor. To access the system boot options, press F12 immediately.

2. Select the Diagnostics option from the boot menu screen.

3. The PSA+ window will appear, showing all the devices detected on the computer. The diagnostics will begin to run checks on all of them.

4. Once this test is over, a message will appear prompting “if you want to continue the memory test.” Choose No.

5. Now, 32-bit Diagnostics will start. Here, choose the custom test.

6. Run the test with the fan as the device. The result will appear after the test is complete.

If you get an error message like ‘Fan-The [Processor Fan] failed to answer correctly,’ it means that your fan is damaged and you will need a new one.

Most of the time, the ‘bad CPU fan contact’ issue is triggered by the fan itself, which causes it to stop running. It may be due to its poor quality or damage to the fan. To prevent such troubles, it is beneficial to purchase a suitable and reliable CPU fan for your machine.

ADATA, Intel, Corsair, DEEPCOOL, COOLERMASTER, and other well-known CPU fan manufacturers exist today. You can get a trusted CPU fan with a premium guarantee from these stores.

To avoid purchasing an unsuitable fan, you should first inspect the CPU on the motherboard.

While purchasing a CPU fan, one of the most critical factors to consider is the amount of heat it emits. A fan with good thermal emission prevents the CPU from overheating, thereby preventing the machine from shutting down unexpectedly or being damaged.

Frequently Asked Questions (FAQs)

Q1. I don’t know ‘how to reset the BIOS to default’ in Windows 10. Please help.

If you don’t know how to reset the BIOS in Windows 10, here is how you can do it:

1. Go to Start -> Power, hold the  Shift key, and then click the Restart button. 

2. Then go to Troubleshoot -> Advanced Options -> UEFI Firmware Settings, click Restart, and you’ll be on the BIOS settings screen.

OR

Alternatively, you can restart your machine normally and boot into the BIOS settings by pressing the appropriate key on the startup screen. Different computer manufacturers use various hotkeys, such as F12, Del, Esc, F8, F2, and so on.

1. In the BIOS settings screen, use the arrow keys on your computer keyboard to locate the BIOS setup default option. It would be under one of the BIOS tabs.

2. After you’ve located the Load Setup Defaults option, select it, and press Enter to begin resetting the BIOS in Windows 10 to factory default settings.

3. Finally, hit F10 to exit and save your BIOS. Your machine will restart on its own.

Note: Resetting the motherboard jumper and removing, then reinserting the CMOS battery are two more methods to reset BIOS in Windows 10. 

Q2. What is a BIOS?

BIOS (Basic Input/Output System) is a type of firmware (computer program) that is used to boot computers. It is used by the device microprocessor to start the system after it has been turned on. For a computer to boot, it must have a BIOS.

If your CPU fan is not running, it can be a frustrating problem as it might trigger a series of malfunctions and errors on your device. Therefore, it is imperative that you detect this issue & resolve it.

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We hope that this guide was helpful and you were able to fix CPU Fan not spinning. If you find yourself struggling during the process, reach out to us through the comments, and we will help you out.