Hardware Interrupts taking 20%-30% of CPU after gaming


  1. impulez
    Posts : 5
    Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
       New #1

    Hardware Interrupts taking 20%-30% of CPU after gaming


    I've read a few threads on this problem but none of them really solved my problem.

    This has never happened before on my laptop but after I did a clean install of Windows 8 Pro, this problem started to show up. I went back to Windows 7 (Factory default) but the problem still persists.
    I used to game with no problem but now when I game for around 10-20mins (when laptop starts heating up) my hardware interrupts shoot up to 20-30% of my CPU (process monitor), ive used latencymon to try to find the problem and it seems to be "ACPI.sys". Read around and tried disabling some device but did not fix the problem?

    I've tried:
    - disabling anything that was able to be disabled in device manager
    - re installed drivers/ checked drivers
    - updates

    Is there any other solutions I can try to fix this problem? (I want to leave updating my BIOS as a last option as this problem was never there before)
    Last edited by impulez; 25 Dec 2012 at 01:52.
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  3. centaur78
    Posts : 1,454
    Windows 7 ultimate x64
       New #2

    Please use this tool to update your profile specs
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  4. centaur78
    Posts : 1,454
    Windows 7 ultimate x64
       New #3

    Also would you care to share some snapshot... it would be helpful.. if its ACPI.sys that causing this.. then it would most probably be a power issue... wherein you would need to update the BIOS... but then again need more details to confirm that..
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  6. impulez
    Posts : 5
    Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
    Thread Starter
       New #4

    hmmm... it seems the problem is gone but can someone explain why all i did was... download windows sdk 7 for xperf and change the registry HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management... DisablePagingExecutive from 0 to 1 and did a restart, and tried to recreate the problem but it didn't o.O

    Edit: nvm it seems that that did not fix it but there was one session where nothing happened...
    Last edited by impulez; 25 Dec 2012 at 13:56.
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  7. centaur78
    Posts : 1,454
    Windows 7 ultimate x64
       New #5

    If you expect ppl to help you.... I would be nice to put in some snapshot or files or even at the very least update your system specs....

    Without doing any of these.... I am sure you would agree with me.. that none of us here are God's or have divine powers to deduce your story and solution out of thin air !!!
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  8. Layback Bear
    Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       New #6

    I must agree with Centaur 78, we need more information. Use this.
    System Info - See Your System Specs
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  10. impulez
    Posts : 5
    Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
    Thread Starter
       New #7

    Sorry about that, I have updated my system specs and here are some screenshots of process monitor and latencymon (after a minute).

    This usually happens after around 5-20 mins of gaming and stays until my next restart. And as I stated before I really changed nothing but ran flawlessly before I restarted my laptop. [The problems started a week ago OR I could have been oblivious to this problem from the beginning]
    Last edited by impulez; 26 Dec 2012 at 17:51.
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  11. impulez
    Posts : 5
    Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
    Thread Starter
       New #8

    Well... thnx I solved it by updating my bios
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