The fan is, without a doubt, the most audible component of a computer. This is because it is intended to spin faster with increased workload and thus cool all internal components. If, on the other hand, you discover that your fans are becoming noisier while your computer is inactive, there are a few frequent explanations for this.

Here is we will tell you why your CPU fan reviving up and down constantly as well as the steps you must take to correct the situation. All you have to do is take the time to read the post thoroughly, as it will straightforwardly explain everything. Let’s get started!

Reasons Why CPU Fan Reviving Up And Down Constantly

CPU Fan Revving Up And Down

1. Lack of Proper Ventilation

For your computer to operate at peak performance, it needs enough airflow. On the other, limited airflow may result in serious performance concerns, such as the overheating of the CPU and other components. It can cause the failure of the entire system.

Most notably, when the CPU senses extreme heat, it tends to slow down as a kind of self-protection to save energy.

Insufficient ventilation may be caused by dust collection, inadequate PC storage, or insufficient clearance surrounding the air vents.

2. Computer Virus

In the case of a computer virus or worm, your life might be made a living nightmare. These malware infestations not only slow down your computer but may also overwork your hardware. It results in irreversible harm to your machine.

When malware enters your computer, it has the potential to use a substantial amount of storage space and other resources. In the process, it consumes even more space and resources than it started with.

As a consequence, your fans’ blades may need to revolve more quickly to maintain the proper temperatures inside the device, resulting in strange sounds.

3. Overclocking

Overclocking is a sure-fire method to cause the components in your computer to overheat. As a consequence, your computer’s fans must spin faster to disperse the heat to the surrounding environment.

As a consequence, you overstretch the capabilities of your computer to the point of exhaustion. If you do so without using a high-performance cooling solution, your fans will almost certainly whirl more quickly and generate more noise than usual.

4. Faulty Fan

The fans may make a clicking or grinding noise that you will be unable to ignore. If you apply a drop of sewing machine oil to the affected area right away, it may be of assistance.

This is seldom a satisfactory solution. I propose that you replace the fans on your computer with new ones since they are not too expensive.

5. Overheating

When your laptop’s CPU is under tremendous strain, you will notice that the fans on the back of the machine are spinning quicker. You will be able to tell by the amount of noise emanating from your laptop. There are a diversity of variables that contribute to the overheating of your CPU.

6. Out Of Date Windows Driver

Your hardware may not be able to function to its full capacity if your drivers are out of the current, which may be caused by having outdated drivers. If you do not keep your drivers up to date, your hardware may begin to work inefficiently, which is one of the key reasons why your fan revives up and down.

Related Guide: Types of CPU Coolers

Solutions of CPU Fan Revving

1. Improve Air Flow

Keep your computer on a plane, uniform surface, such as a small table or even the floor, to maximize its performance. Please do not place your computer on a carpeted surface or in a drawer or cupboard. 

You need to be able to move about your computer so that cool air can flow around it. You must provide a path for the hot air that is generated within your computer while your fans spin to remove it.

2. Maintain The Purity Of Your Fans And Vents

Take away dust from the fans and vents regularly to ensure that your processor can cool itself adequately.

Take a compressed air duster sometimes known as canned air and direct it at an angle toward the vents on your computer. Your objective is to clear the air of dust.

3. Remove Viruses

A malware finding and removal tool from a trusted vendor is your most powerful friend against resource-sucking malware. Your fans will have an easier time cooling if you don’t have malware eating up your CPU power and disc space.

4. Proper Space

Always situate your computer so that its vents are not covered by objects that might cause overheating, such as textiles or other soft furnishings. If possible, keep your computer on level, solid surfaces to ensure that airflow is not stopped while it is running.

Why Is My CPU Fan So Loud All Of A Sudden?

A noisy computer fan occurs when your computer generates a lot of heat, pushing hot air out of your computer and allowing cooler air to circulate. 

Loud computer fans may also be caused by dust accumulating within your computer, which has a detrimental influence on the operation of your computer.

Is it a problem if the fan on my computer is too loud?

Extremely loud computer fans and noisy laptop fans might be an indication that something is wrong, particularly if the noise continues for an extended length of time. 

The purpose of a computer fan is to maintain your computer cool, and extreme fan noise indicates that the fan is working harder than it should be.

How Do I Fix My CPU Fan Noise?

If your computer fans are becoming excessively noisy, here are some troubleshooting steps you may do to attempt to resolve the issue.

  • Improve the airflow around your computer or laptop by moving it.
  • Give Your Computer Fans a Good Cleaning
  • A Laptop Cooling Pad Should Be Used
  • Replace the fans in your home.
  • Windows PC Maintenance Should Be Done Regularly


Make sure you follow the above-mentioned recommendations to maintain your fans running quietly and efficiently. After reading this article, I firmly believe that you will be able to make your computer more silent than ever before.

Saqib Ali

Saqib Ali, A passionate blogger and Computer Geek help people to build their dream PC. He spends hours in research to pick the right products and then test them and suggest people in guides on Finest Desktop.