CPU is the most important part used in the working of computer. CPU only does all the processing of data in the computer. If you open more programs or application software simultaneously, the cpu will have to work a lot and the cpu will reach its high limit of 100% usage. Other than that bad program. Loop Work. Due to malware etc also the cpu reaches to the high limit.
Reasons for high CPU usage
Windows High CPU Usage: Why is my CPU at 100/99/90…? First of all you should know what are the reasons for 100% CU Usage on laptop and pc. Here are the main reasons:
- background apps - There are a lot of background apps running on your Windows 11 computer. Normally, you don't use these background apps. But if they are running in the background, they will occupy your CPU usage. This may be the reason for the high CPU usage of Windows.
- virus or malware - Your computer is infected with a virus or malware. If your computer has viruses or malware, they will not only damage your files but also bring high CPU usage on your Windows 11 device.
- Windows Services - Windows Services are using your CPU. It is not only the apps that are using your computer's CPU, but Windows services as well. Sometimes, a Windows service may require excessive demand of your CPU for a short period of time. This can result in high CPU usage on your computer.
- Antivirus software - Antivirus software is using excessive CPU. To protect your computer from viruses, you might have installed third-party anti-virus software on your device. Usually, you can set the software to run in the background. Sometimes, background scanning can overload the CPU, which leads to high CPU usage in Windows.
If you are running multiple apps at the same time. Or you are playing high-end games. Similar other processor-intensive apps are running simultaneously. So cpu can reach 100% usage.
How to check CPU usage on Windows?
Checking the CPU usage on your Windows 11 computer is very simple. You can do this using Task Manager.
- Right-click on the Start button from the taskbar and choose Task Manager from the WinX menu to open Task Manager. You can also open it by searching task manager in window search.
- If you see only some running programs, click More details.
- Under Processes, you can see the CPU usage of your device.
How to fix 100% or higher CPU usage on Windows?
Let's summarize some of the ways to solve this problem on Windows 10, 11 and detail them in this section. you can try them to see
Reboot your computer -reboot your computer
Restart your computer can close all running apps and services at once. After rebooting the computer, you can go into Task Manager to check if CPU usage is still high. If not, you can use your PC normally. Please remember this time: You'd better not open too many apps. When you don't need to use an app, you should close it, but don't minimize it.
Close unnecessary apps - If your Windows CPU usage is high again, then you need to check if some unnecessary apps are currently running and close them to free up more CPU.
All you need to do is :
All you need to do is :
- Open Task Manager on your computer.
- Click on More Details to continue.
- In the CPU column under Processes, you can see the CPU usage status on your device. You can click the CPU column to have Task Manager show CPU usage in descending order. Then, you can close unnecessary apps that are consuming too much CPU. All you need to do is right-click on the app you want to close and select End Task from the right-click menu. You can also select the target app and then click on the End Task button at the bottom right corner to close it. After that, you can repeat this step to close all unnecessary apps and reduce CPU usage.
Disable Unnecessary Startup Apps - Some apps start when your computer boots. These are the startup apps. Typically, these apps are the tools you use most often. Although some apps are set to start on computer boot when installed, you may not have noticed this issue. If you have multiple apps running on your computer at the same time, the CPU usage will be high. To solve the problem, you can disable startup apps that you do not use often
Update Windows to the latest version - High CPU usage may be a bug on your Windows computer. If Microsoft finds it, it will find a fix in an optional update or a major update and release the fix. So it is better that you keep your Windows up to date.
You can visit Windows Update to check for available updates for Windows:
You can visit Windows Update to check for available updates for Windows:
- Go to Start > Settings > Windows Update.
- Click on the Check for Updates button to see if an update is available. If yes, the update will be downloaded and installed on your computer.
- If necessary, you must restart your computer to complete the entire installation process.
Disable Windows Update Service - Windows Update can automatically scan for updates and download and install updates on your computer. This will definitely use CPU and increase CPU usage. If CPU usage is too high, you can open Task Manager to see if Windows Update is using too much CPU. If yes, then you can disable Windows Update service to solve high CPU usage issue on Windows
- Click on the Search icon from the taskbar and search for Services.
- Select the first result to open Services on Windows
- Scroll down to find Windows Update option, then click on it to open its Properties interface.
- Expand Startup types and select Disabled.
- Click on Apply.
- Click OK.
Scan your computer for viruses and malware - Viruses and malware are major threats to your computer. They can steal your confidential information. They can also use a lot of CPU, even 100% CPU usage on Windows 11.
Therefore, if all the above methods can't help you fix the high CPU usage problem, you can use anti-virus software to scan for viruses and malware, and remove them when found .
Therefore, if all the above methods can't help you fix the high CPU usage problem, you can use anti-virus software to scan for viruses and malware, and remove them when found
Therefore, if all the above methods can't help you fix the high CPU usage problem, you can use anti-virus software to scan for viruses and malware, and remove them when found .
Therefore, if all the above methods can't help you fix the high CPU usage problem, you can use anti-virus software to scan for viruses and malware, and remove them when found
Therefore, if all the above methods can't help you fix the high CPU usage problem, you can use anti-virus software to scan for viruses and malware, and remove them when found .
Uninstall third-party anti-virus software - Some third-party anti-virus programs are set to run in the background to scan for viruses and malware. But they may cause high CPU usage. You can go into Task Manager to check if your third-party software is using too much CPU in the background. If yes, then you can uninstall it from your computer.
Some users worry about virus and malware problem after uninstalling third-party anti-virus software. This is not a problem because Windows has built-in anti-virus software: Windows Defender. This tool can provide real-time protection for your device if it is enabled.
Some users worry about virus and malware problem after uninstalling third-party anti-virus software. This is not a problem because Windows has built-in anti-virus software: Windows Defender. This tool can provide real-time protection for your device if it is enabled.
Disable Background Apps - Apps running in the background are also using the CPU on your device. If you want to reduce CPU usage, you can choose to disable unnecessary background apps.
Select Apps & features from the right panel.
Find the app you want to stop from running in the background, then click on the 3-dot menu next to it and select Advanced options.
Expand the options under Background apps permissions and select Never.
- Go to Start > Settings > Apps.
Power Option - Some power settings can reduce your CPU speed. Power issues are familiar to laptop users, but they can affect desktop systems as well. Check your power options by clicking the Start menu and typing "edit power plan". Once it's open, click on "Power Options" in the address bar at the top of the window.
Click "Show additional plans", then enable a non-power saver plan.
Click "Show additional plans", then enable a non-power saver plan.
update drivers - If a process is still using a lot of CPU, outdated or sub-optimal drivers may be to blame. Drivers are programs that control specific devices connected to your motherboard. Updating your drivers can eliminate compatibility issues or bugs that cause increased CPU usage.
Is it abnormal to have 100% cpu usage?
Many people have a question in their mind. Sometimes the cpu is 100% other times it is normal I don't know what to do.
Sometimes it is normal for cpu to be 100% when there is a long task or heavy program run then cpu reaches 100% usage. If you are not running anything yet your computer or laptop runs at 100% and becomes slow or crashed or cpu is always above 100 or 90% then you have to fix this problem.
Conclusion -CPU 100% usage in computer or laptop is due to using more apps simultaneously, running bad programs, malware, bad or outdated drivers etc. You can fix this problem by closing background apps, removing bad programs, updating your windows and rebooting, and updating drivers.
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