Reasons Why My PC is Suddenly So Loud

There are a few possible reasons why your computer is suddenly so loud. First, the fan on your computer isn’t working very efficiently. It’s also possible that cables are touching fan blades. If you are using intensive programs, the fan may be overheating, too.

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Dusty computer fan

A dusty computer fan suddenly starting whirring can be a sign that your computer is overheating. This can be a result of a faulty heat sensor or dirty heat sink. It could also be due to ambient temperature changes, a dirty thermal paste, or a bad bearing. In either case, the fan should be cleaned to reduce the noise.

You can clean the fan by unscrewing the screws holding it in place, or you can open up the backside of the computer and clean the fan. If you have a laptop, you can remove the backplate and remove the fan. Alternatively, you can use the keyboard shortcut Ctrl+Shift+Esc to open the task manager, which shows a list of applications running in the background.


If you’ve recently started using a new program, your PC might be suddenly very loud. This could be a result of the new application overloading the computer’s processor. Other causes of loud PCs include excessive heat and odor, or a problem with the system’s drive.

The best way to identify the cause of PC noise is to check your computer’s resource usage. If it’s overheating, or the fan is making an unusual noise, you can check the amount of RAM and CPU that’s being used by the system. This will help you determine whether your games or programs are using more resources than usual. Open your Task Manager program and select the Processes tab. Here you can find out how much RAM, disk, network, and CPU usage your computer is making.

If the CPU usage is above 20 percent, it’s time to remove programs that are using the CPU. It may be that your computer is overheating due to a malicious program that is using your system’s resources without your knowledge. Also, make sure that you have a functional fan to regulate PC temperatures. If you’re concerned that your PC is running too hot, you can install a third-party fan control program to reduce the fan speed. However, this software will not be as effective if the computer is already overheated.

Cables touching fan blades

The fan is one of the most common components of PCs and is responsible for the noise that you hear when your computer is working. Its job is to help the computer stay cool and prevent the components inside from overheating. However, if the fan is too noisy even when the computer is idle, it could be due to several reasons. These reasons include dust accumulation, improper ventilation, malware attacks, corrupt processes, or even a faulty fan. There are a few solutions that can resolve the issue. For instance, you can upgrade your software, move your PC, or replace your hardware.

If you suspect a fan is the cause of your sudden loud PC, the first thing to do is to examine the fan. If you can, try to move it manually to see if it causes the noise. You can also insert a soft object between the fan blades to test for damage. Alternatively, you can also use a cardboard tube to test the fan noise. Avoid using sharp objects such as pencils and pens as they may break the blades.

Overheating due to intensive programs

Your PC may be overheating due to intensive programs, which use a high amount of computing power. To solve the problem, you should check the applications you’re running. You can do this by opening the Windows Task Manager. This program is located on the Start menu, and you can also open it by pressing the shortcut Ctrl, Shift, and Esc. It will show you which applications are taking up the most CPU resources.

A few simple tips can also help reduce the problem. First, minimize the number of background processes on your PC. These programs eat up memory, and may also be causing your PC to overheat. To run a thorough check on your PC’s performance, you can use the built-in hardware diagnostics tool to check its performance.

Covering your desktop with a blanket

If you’ve ever heard your computer suddenly become so loud, it may be time to check its ventilation. It may be that a blanket has blocked the airflow, which is crucial for PC cooling. If this happens to you, try to find an alternative solution, such as a lap desk.