Windows 10: smartscreen causing CPU to run at 100% in Windows 10

Discus and support smartscreen causing CPU to run at 100% in Windows 10 in Windows 10 BSOD Crashes and Debugging to solve the problem; My laptop has been running almost too slow to use. In task manager, the CPU is constantly at 100% and SmartScreen is always what seems to be causing... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by RebeccaDis, Sep 10, 2019.

  1. smartscreen causing CPU to run at 100% in Windows 10


    My laptop has been running almost too slow to use. In task manager, the CPU is constantly at 100% and SmartScreen is always what seems to be causing it. I am simply using the internet to help my daughter with a school project, but my laptop sounds as if I am running a large program on it constantly. I have just been using Windows Defender as my antivirus along with a VPN so I know it's not caused from clashing with another antivirus running.

    :)
     
    RebeccaDis, Sep 10, 2019
    #1
  2. Nikhar_K Win User

    Turn off automatic driver update and SmartScreen causing high disk and memory usage

    Hi,

    Thank you for writing to Microsoft Community Forums.

    I understand it can be quite frustrating when the computer does not work the way you want it to. I certainly appreciate the steps that you have tried. We can perform a couple of steps and see if we can resolve the issue.​

    You can turn off the automatic installation of drivers from the Device installation settings and check if that helps. To turn off automatic installation please follow the steps mentioned below:

    1. Type Change Device installation settings
      in the search bar and open it.
    2. Click on No.
    3. Click on Save Changes.

    Regarding SmartScreen causing high Disk and Memory usage, you can turn off the SmartScreen from Windows Security and check if that helps. To turn off SmartScreen, please follow the steps mentioned below:

    Note: SmartScreen automatically scans applications, files, downloads, and websites, blocking known dangerous content. We recommend leaving SmartScreen enabled, as it provides an additional layer of security that helps to protect the PC.

    1. Press and hold Windows + I key on the keyboard.
    2. Click on Update & Security.
    3. Click on Windows Security.
    4. Click on Windows Defender Security Center.
    5. Click on App & browser control.
    6. Select off under Check apps and files, SmartScreen for Microsoft Edge
      and SmartScreen for Microsoft Store apps.

    Hope it helps.

    Please reply with the status of the issue, we will be glad to help you further.

    Nikhar Khare

    Microsoft Community - Moderator
     
    Nikhar_K, Sep 10, 2019
    #2
  3. 100% CPU Usage after Windows 10 upgrade

    Hello Aaron,

    Thank you for posting on Microsoft Community. We regret the inconvenience caused and will assist you in resolving the issue.

    Most of the time, computers only use a small fraction of their CPU power. In fact, many computers use less than 5% of their CPU most of the time. When you open an application, play a video game, or encode media file, the CPU usage will rise or spike temporarily.
    Once the CPU intensive process completes, the CPU usage should once again drop down to lower level. Most applications will not use up more than 50% of your CPU for an extended period of time. However, some programs and system processes can use up a large amount
    of CPU without you even knowing it. This may happen if a program gets stuck in an infinite loop or encounters an unexpected error.

    I suggest you to perform Safe mode and Clean boot procedures on the PC by following the steps below.

    Step 1: I suggest you to boot your PC in Safe mode by following the steps from the link below and check if the issue is resolved.

    Safe mode is a diagnostic mode that starts your computer with limited drivers necessary to run Windows. The words
    Safe Mode appear at the corners of your monitor to identify which Windows mode you are using.

    Expand the options to boot into Safe Mode:

    http://windows.microsoft.com/en-in/windows-10/start-your-pc-in-safe-mode



    Reboot the PC to exit from Safe mode.

    To know more about Safe mode, following is an article on
    Windows Startup Settings (including safe mode)
    (Applies to Windows 10 also):

    http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-safe-mode

    Step 2: If the issue persists, perform Clean boot on your PC by following the steps from the link below and check if the issue is resolved.

    Putting your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue.

    I suggest you to perform clean boot by following the steps from the link below and check if the issue is resolved.

    You can open the system configuration window in Windows 10:

    a. Using run command.

      • Press Windows Key + R keys on the Keyboard.
      • Type msconfig.msc and press Enter.

    b. Using Cortana.

      • Press Windows icon key on the keyboard and type msconfig.
      • Select the top most search result.
    Follow the steps from 3 under How to perform a clean boot
    for Windows 8.1 and Windows 8 from the link below (The steps for clean boot suggested in the link below for
    Windows 8/8.1 is applicable for Windows 10 as well):

    https://support.microsoft.com/en-us/kb/929135

    Disclaimer: Start the computer in normal mode refer the section,
    How to reset the computer to start normally after clean boot troubleshooting
    from the link above.

    Write to us with the status of the issue on the same post for further assistance. Your reply is most important for us to ensure we assist you accordingly.

    Thank you.
     
    Likhitha V, Sep 10, 2019
    #3
  4. Xylee Del Win User

    smartscreen causing CPU to run at 100% in Windows 10

    CPU not running in full speed in Windows 10

    Hello,

    Windows 10 may have encountered a system conflict that caused this issue. For us to help you with this concern, kindly answer the following questions:

    • Have you made any recent changes to your computer prior to this issue?
    • What is the current build and version of your Windows 10? To check type in
      winver on the search bar and press Enter.
    • Aside from clean installations, what other troubleshooting steps have you done so far?

    Meanwhile, we suggest that you run Windows 10 on
    Safe mode
    and check the CPU performance if there will be any changes.

    We'll be waiting for your reply.
     
    Xylee Del, Sep 10, 2019
    #4
Thema:

smartscreen causing CPU to run at 100% in Windows 10

Loading...
  1. smartscreen causing CPU to run at 100% in Windows 10 - Similar Threads - smartscreen causing CPU

  2. CPU 100%

    in Windows 10 Drivers and Hardware
    CPU 100%: Whenever I am running the game Terraira which is easy to run, my CPU 0 always caps out and causes stutters. all other cores run normally about 30-50% I have an i7 9700k processor if that helps...
  3. 100% CPU usuage Windows 10

    in Windows 10 BSOD Crashes and Debugging
    100% CPU usuage Windows 10: I will have a period of time when I first log into the computer where usage of the CPU hits 100% for some periods of time. It seems that Windows 10 can't actually operation a system. What is going on? Things which aren't really answers. 1. Link to another question...
  4. Windows Defender SmartScreen cpu usage

    in Windows 10 Customization
    Windows Defender SmartScreen cpu usage: My computer has been running slow and I noticed that Windows Defender SmartScreen is using 45-55% of my cpu capacity. I have Windows 10 and Norton anti-virus on the computer. I looked in the forums and it sounds like this should be off when running another anti-virus...
  5. My CPU is running at 100%

    in Windows 10 BSOD Crashes and Debugging
    My CPU is running at 100%: I have a Dell 3655 (AMD win 8 originally with 8 GB RAM) Desktop Then I upgraded to win 10 home and 16 GM RAM, up to date well, My cpu is running at 100% all the time, I checked some process already and I got this: Service Host Local System (2) CPU (94.3%)...
  6. Smartscreen causing computer revving

    in AntiVirus, Firewalls and System Security
    Smartscreen causing computer revving: My Windows 10 computer is constantly revving. Whenever I check it on Task Manager, it shows SmartScreen at 35-45% on the CPU. I have most the settings off or on "warn" for SmartScreen. I'm afraid it's going to burn our computer out. What can I do to manage this?...
  7. Windows update runs 100% of time at 99% CPU

    in Windows 10 Installation and Upgrade
    Windows update runs 100% of time at 99% CPU: 5 minutes after I successfully complete a manual Windows update run, and after setting the 30-day pause option to "on", Windows Update (wauserv) re-starts spontaneously and runs at 99% of CPU literally forever. It's been like this since I installed Windows 10 last April and...
  8. CPU 100%

    in Windows 10 BSOD Crashes and Debugging
    CPU 100%: ‪CompatTelRunner.exe is using up CPU, what is this https://answers.microsoft.com/en-us/windows/forum/all/cpu-100/935dd1c4-9887-425d-89cd-e1493d23a92a
  9. CPU running at 100% after the last Windows update!

    in Windows 10 Installation and Upgrade
    CPU running at 100% after the last Windows update!: The weird thing is that when I open the task manager window, the CPU usage goes lower. And when I close it, It rise again to 100%!! Should I go back to the previous version? Or what exactly should I do? Thanks in advance....
  10. 100% CPU

    in Windows 10 BSOD Crashes and Debugging
    100% CPU: Heloo i have 100%cpu on windows 10 can somoane help me pls?[IMG] https://answers.microsoft.com/en-us/windows/forum/windows_10-performance/100-cpu/a4546441-c929-4c20-81ff-b73c27b8858b

Users found this page by searching for:

  1. windows defender smartscreen

    ,
  2. windows defender smartscreen using cpu