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Win 7 freezes, sudden CPU Usage peaks (System interrupts)

Discussion in 'Windows 7' started by Diva_Sheep, Mar 19, 2010.

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  1. Diva_Sheep

    Diva_Sheep Thread Starter

    Mar 19, 2010
    A few days ago I went ahead and installed Windows 7 on my pc. But ever since then I'm having a lot of problems with my computer. The first few minutes my computer works as it is supposed to but after a while it starts to get more and more problems.
    For example if I open my tv app the first few minutes after a restart it works all fine but if I close it and re-open it again, the images and sound start to stutter and every couple of seconds everything hangs (sound, image and even my mouse). At those times I can see sudden peeks in the CPU Usage (at the performance tab in Task manager). At the "recourse monitor" i noticed that every time the cpu usage shoots up, a process called "System Interrupts" uses most of the cpu power.
    I also have the idea that when scrolling down, on some pages it goes a lot slower than when I still had XP. Also if my pc is on for more than a couple of hours even my internet broser (chrome) starts to get more and more issues. It starts to get more irresponsive, when I'm typing every now and the browser hangs for a couple of seconds and then fills everything I've typed in. Or when I try to change tabs it sometimes takes a few seconds before it responds.
    I don't seem to have any problems during games, although they aren't 100% smooth all the time. Sometimes it seems that a frame or two are being skipped..

    I have already tried reïnstalling all drivers, only thing though is that my motherboard producer hasn't released official win 7 drivers but I read somewhere that the vista 64bit drivers should also work. I also updated my bios.
    Does anybody know how I can fix this problem? At the moment I have to restart my pc every hour or so, and that is getting a bit annoying.

    My pc setup:
    Windows 7 Ultimate 64bit
    Asus P5K
    Intel Core2Duo E6750
    4x Corsair CM2x1024-8500C5D 1GB
    Ati Radeon HD 4870 1GB
    TV card: Happauge WinTV PVR 150

    Thanks in advance!

    PS I've taken 2 pictures of before and after I start my tv app with my cpu usage:

  2. ratsrude


    May 18, 2005
    I am having the same problem as you.will be intersting to see what others says about it.
    someone said to me that after playing music files it slows down due to the indexing.
    I am not sure if that is correct or not.... but it may be related as you are using multimedia files with your t.v card ????
  3. Diva_Sheep

    Diva_Sheep Thread Starter

    Mar 19, 2010
    No, I am not using any multimadia files with my tv card, just watching tv with it.. But I did come across this at their website:

    I do have exactly 4GB of RAM.. hope that's not the problem.. I'll try to see if i still have the problem if i pull one of the memories out.

    PS i also heard that onboard network cards can be the problem.. Tried a different network card (usb one) didn't solve any problems either..
  4. legion666


    Apr 8, 2008
    mmmmm its a hunch but i had a virus once that made my cpu peak and windows went really slow

    also make sure the drivers for your tv tuner card are fully updated and the program that you use to watch tv is the same
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