How to Fix High CPU usage (Service host Sysmain/ Superfetch)

Many types of users have reported that the Sysmain process, which was earlier known as superfetch that causes high CPU usage and sysmain services, helps understand how to use your hard drive. It is not exactly useful for your PC. The service host is the local system, a bundle of processes containing windows auto-updates and other windows applications that run in the background. These system services cause the computers to run slowly because they just use system resources and materials such as CPU cores, disk space, and memory, so the main problem occurs. 

Also, most of the system’s services could be disabled if they will not affect your system’s stability, and this could help the older computers run smoothly without any type of cost for upgrades and updates. 

By clicking on the Ctrl + Alt + Del you can simply get a quick and fast access manager. By scrolling down, just stay on the first process tab as you can get many types of host-related processes and services like service host for network services, local system network restricted and service host local service. In Windows 10, the service host is a main local system in task manager of 100% disk usage. 

The service host local system contains windows update and needs system services will be running in it. It is very likely to take up the huge disk and memory, and RAM and even the bandwidth draining PC resources, especially after you get windows 10 updates. 

Fix High CPU usage (Service host Sysmain/ Superfetch)

Method 1: Third-party System Repair Tool (RESTORO) can be properly used

The Restoro is a program that analyses your computer or PC and automatically repairs the computer issues, which might cause high CPU usage.

Following are some steps on how to download and use Restoro on your PC:

Step 1: Firstly download or install Restoro for free. 

Step 2: By checking the ” I Accept the EULA and privacy policy”, accept the license terms, conditions and agreement and then continue. 

Step 3: Once you install the app restoro, your PC can be automatically scanned for the first time. 

Step 4: By expanding the “details” tab, the details of the scan can also be viewed.

Step 5: Now to fix the issues found click on the recommendation tab and then select between “clean” and “ignore”. 

Step 6: At the bottom part of a program, tap on clean to begin fixing issues. 

Method 2: Scan for Malware and Virus

If your PC has virus issues or malware, the most common sign is that high CPU usage and to scan for viruses and malware follow the steps correctly:

Step 1: Look for windows defender by clicking on windows key + S.

Step 2: Now, just open the window defender. 

Step 3: Now click on the scan options and choose full and tap scan now. 

Step 4: Restart your computer system once the scan is finished. 

Step 5: After that open task manager by clicking ctrl+Alt+delete on your keyboard. 

Step 6: See if the issue is resolved or not correctly by checking your system’s CPU usage. 

Method 3: Use an SFC scan

The following is the command that will scan all system files on your PC and solve and recover the files. 

Step 1: On your keyboard, press Windows key + X and choose command prompt (Admin). 

Step 2: Whenever a command prompt opens type “SFC/scannow” and click enter. 

Step 3: Once your scanning is done, a system message will appear on the screen and then see the below list to guide you further. 

  • The windows resource protection did not find any type of integrity violations

It means that your operating system does not have any type of corrupted or missing files. 

  • Windows resources protection couldn’t perform the requested operations: 

It means that the repair tool detected a problem during the scan, so you need to opt for offline scanning. 

  • Windows resources protection is found corrupt files and successfully repair them: 

It means that this message will appear on your screen whenever the SFC was able to solve the problem detected. 

  • Windows resources protection can detect corrupt files but not able to solve some of them:

The corrupted files are required to be repaired manually if this error occurs continuously.

Method 4: Disable backup intelligent transfer services

Step 1: Firstly open task manager by clicking on ctrl+Alt+Delete then choose task manager. 

Step 2: You will find open services by clicking on the services tab below. 

Step 3: Now look for background intelligent transfer service. 

Step 4: Now just right tap on it and choose stop. 


Step 1: Click on Windows key + X to open the quick menu and then open a command prompt(admin). 

Step 2: Now enter the lines net.exe stop superfetch on the command prompt. 

Step 3: Now press the enter button. 

Now just check your CPU usage again and just check appropriately if the problem is solved or not. 

Method 6: Disable automatic updates 

Step 1: Click on windows key + R to open the run command. 

Step 2: Now type services.msc

Step 3: After that, just double-tap on windows update, and a pop-up window will appear. 

Step 4: Now press on startup type and choose disabled. 

Step 5: Now click on ok and reboot your PC and check if the problem has been fixed properly. 

Even if high CPU usage is still present after using all the above methods or procedures, you should go to the nearest service centre. Ask them to do a fresh installation of windows and backup all your essential files before formatting your PC. 


What is Superfetch?

Superfetch is a windows service intended to make your application launch faster and improve your system response to speed. It does so by preloading programs that you can frequently use into RAM to be called from the hard drive every time to run them. It is advised that you turn the computer off if you are facing this kind of problem.

What if the problem is not solved correctly? 

Suppose you face a lack of difficulties operating your computer system and have tried all the above methods. In that case, the best option will be to go to the nearest services centre and give them for solving and repairing the problems in your PC.


With the help of the above information, you can quickly get to know how you can solve the issues related to CPU usage with the help of service host sysmain or superfetch. All the above methods will be useful to fix the problems of the CPU usage. You can also use the above procedure to properly solve the problem and go to the service centre if your problem is not fixed. 

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