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System Interrupts Huge CPU Usage

Anonymous
2009-11-18T12:06:50+00:00

Hi,

I have just recently installed Windows 7 Professional on my machine and I am having a problem with a process called System Interrupts using alot (25% approximately) of CPU.

I have tried several supposed fixes i have found here and on other forums but have not solved the issue.

I am at wits end.

http://i289.photobucket.com/albums/ll203/SK-illfull/systeminterrupts.jpg

Mobo: Gigabyte GA-EP35-DS3

Video Card: Nvidea 8800 GTX

Windows for home | Previous Windows versions | Windows update

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  1. Anonymous
    2012-02-23T09:40:40+00:00

    My computer got so slow that the mouse was slow and jerky and I had to reboot. System interrupts was at about 30% CPU time. My PC is now with 5 days uptime and the bug seems to have disappeared. The following solution seems to solve the issue :

    1. Right-click on the speaker icon
    2. Select playback devices
    3. Click on the speaker properties
    4. Go to the enhancements Tab
    5. Click Disable All Sound Effects
    6. Click OK. You're done!

    The sound enhancements seem for some reason to cause the problem even when not used. So disable them following the procedure above. Good luck!

    90+ people found this answer helpful.
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  1. Anonymous
    2015-08-18T04:20:34+00:00

    Solved it on my Windows 8 machine.  I just disabled USB legacy and USB 2.0 in my bios.

    I used xperf to discover USBPORT.SYS was causing high system interrupts.  Took a guess and went through BIOS to play with some stuff.  Seems to be working so far.

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  2. Anonymous
    2009-11-20T12:51:54+00:00

    Sorry, without being able to see the machine I'm out of ideas. Hopefully someone else reading your thread will have some suggestions. I'm sorry I was unable to help you.

    MS-MVP - Elephant Boy Computers - Don't Panic!

    1 person found this answer helpful.
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  3. Anonymous
    2009-11-18T13:28:19+00:00

    After you installed Win7, did you then install all the Win7 drivers for your hardware? If not, that's your next step.

    Get them from:

    1. The device mftr.'s website; OR
    2. The motherboard mftr.'s website if hardware is onboard; OR
    3. The OEM's website for your specific machine if you have an OEM computer (HP, Dell, Sony, etc.).

    Read the installation instructions on the website where you get the drivers.

    To find out what hardware is in your computer:

    1. Read any documentation you got when you bought the computer.
    2. If the computer is OEM, go to the OEM's website for your specific model machine and look at the specs (you'll be there to get the drivers anyway)
    3. Download, install and run a free system inventory program like Belarc Advisor or System Information for Windows.

    http://www.belarc.com/free_download.html - Belarc Advisor

    http://www.gtopala.com/ - System Information for Windows

    MS-MVP - Elephant Boy Computers - Don't Panic!

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  4. Anonymous
    2009-11-18T13:55:03+00:00

    Have installed updated Windows 7 Drivers for all hardware installed.

    http://www.gigabyte.com.tw/Support/Motherboard/Driver\_Model.aspx?ProductID=2741&ost=windows+7+64bit#anchor\_os

    http://www.nvidia.com/Download/index.aspx?lang=en-us

    Still heavy cpu usage from system interrupts process

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