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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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!

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  1. Anonymous
    2010-01-20T16:25:38+00:00

    Hi NinjaWill,

    great that you found the cause with the help of my guide. This is why I wrote it, so that it helps you to find the cause :)

    Have fun with your Windows 7.

    André

    "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

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  2. Anonymous
    2010-01-20T00:07:58+00:00

    I believe I found the issue.  I found this http://zuki.org.uk/blog/?p=31 , and it was the same exact thing I had.

    There were constant erroneous RAID requests or something, even though I don't have a raid setup.

    Disabling Command Queuing fixed the issue, but instead of that I switched to default windows SATA drivers, and I removed my smaller storage drive (Now I only have my 320gig)

    No problems now, System Interrupts never goes past 1%.  Maybe the drive was messed up - it was fairly old.

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  3. Anonymous
    2010-01-19T13:18:52+00:00

    Can you please contact nVIDIA and tell them your results?

    André

    "A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

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  4. Anonymous
    2010-01-19T09:02:47+00:00

    Attempted to install Nvidia nForce drivers instead of eVGA's mobo drivers.

    Seemed to help a little, but still have the same problem.

    And instead of nvstor.sys, now its nvstor64.sys  (For my 64bit Win7)

    Sigh...

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