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SysMain is a built-in Windows 10 feature. It watches how you use your computer and tries to make things faster—like opening apps quicker.
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But sometimes, it slows everything down instead of using too much power. The good news? It’s not critical, so you can turn it off if it’s causing problems.
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When SysMain takes up too many resources, your computer slows down. This can lead to crashes, lost files, or even hardware damage if it keeps happening.
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If SysMain is messing with your system, shutting it down is smart. Check out the steps below to fix it.
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Ways to Fix SysMain’s High CPU and Memory Use
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Note: Some fixes need an administrator account. You should log in as one to follow these steps.
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Option 1: Turn Off SysMain in Services
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Here’s how to stop SysMain from using the Services tool:
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- On your keyboard, press Windows + R.
- Type “services.msc” and hit Enter. This opens a list of services.
- Find SysMain in the list, right-click it, and pick Properties.
- In the General tab, set the Startup type to Disabled. Then click Stop under Service status.
- Hit Apply, then OK to save. Your computer should feel faster now.
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Option 2: Shut Down SysMain with Command Prompt
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This method uses a command line and works best if you’re comfortable with basic tech stuff:
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- Open Command Prompt as an admin:
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- Search “Command Prompt” in the taskbar, right-click it, and choose Run as Administrator.
- Or press Windows + R, type “cmd,” then press Ctrl + Shift + Enter.
- Or press Windows + X and select Command Prompt (Admin).
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- Click Yes if a permission pop-up appears.
- Type this command and press Enter: sc stop “SysMain” & sc config “SysMain” start=disabled
- Restart your computer to finish.
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Option 3: Stop SysMain Using Registry Editor
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This method tweaks your system’s settings with the Registry Editor:
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- Press Windows + R to open Run.
- Type “regedit” and press the return key to open the Registry Editor.
- Go to this path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SysMain. wp:list
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- Tip: Copy and paste it into the address bar at the top for speed.
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- Find the Start entry, right-click it, and hit Modify.
- Set the value to 4, then click OK. Don’t change anything else!
- Close the editor and restart your computer.
Warning: Back up your registry first in case something goes wrong.
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Option 4: Check System Files with SFC
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The System File Checker (SFC) can fix broken files that might be causing SysMain issues:
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- Open Command Prompt as an admin (see Option 2 for how).
- Type sfc /scannow and press Enter.
- Wait for the scan to finish—it might take a while. Don’t close the window or turn off your PC.
- Restart your computer when it’s done.
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Closing Thoughts
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These steps should help you tame SysMain and boost your computer’s speed.
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For more tips, check out our Help Center, which has many guides. Or reach out to our team for quick support!
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