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Abnormally high CPU usage

Hello!

Did not really know where the thread should be placed so thought that the Windows section works best because I run win 7.

Since I've started getting random BSODs (made another thread about the BSODs) I have also noticed that the CPU is not working properly. Right now I have Chrome open with five tabs and no clips or music or something in the background that is active and the CPU usage from 5% to 50%, when I watch youtube (480p works OK but I have been able to watch 1080p without any problem sooner), I can barely look at it without lags. My internet is not the problem as it works splendidly on other computers (I have 30/5 mbit).

Playing games is almost impossible, when I'm in example League of Legends I only get about 30 fps, while I got 60 fps (I have v-sync on) stable before, using the same settings.

Another problem that may be linked is that the sound of a video or music stops for a sec when the CPU reaches 100% and all I hear is a static noise. The video also seems to lag. If I turn off all the programs I do not use, etc. and only have one tab open with youtube it works fairly well. I want it to work just like before, when I was at least able to multitask a little before it suddenly became much worse.

I've scanned the computer with Kaspersky, found no viruses. I ran MBAM-scan and found some malwares that I removed, no improvement. I defragmented hard disk, no improvement. I ran memtest, 2 cycles, no errors. The computer was formatted somewhere in the middle of December. Also, I have not installed anything fishy/dodgy (nothing at all as a matter of fact, what I remember anyways) just before the CPU started fiddling.

What to do now?

Thanks for your time!
34 answers Last reply Best Answer
More about abnormally high cpu usage
  1. Please post your full PC specs and let us know which BSODs you were getting so we can understand better what is going on, I assume you got the BSOD situation fixed?
  2. RaDiKaL_ said:
    Please post your full PC specs and let us know which BSODs you were getting so we can understand better what is going on, I assume you got the BSOD situation fixed?


    The BSODs problems are NOT fixed, yet... I am still "waiting" for another BSOD to get full dump as I had it set to only make mini dumps. You can read more about the problem in this thread: http://

    Specs are: Q6600 @ 2.4 GHz
    6 gb DDR2 800 MHz
    MS-7360
    HD6870
    Silver Power Supply (somewhere around 600 W I believe)
    500GB HDD
    Win 7 64-bit

    What uses the cpu varies, when I only use Chrome, it can go up to 70% when I just open a new tab (the Task Manager says chrome.exe takes the most CPU power). When I look in Chrome's task manager it says that "Browser" is using the most CPU. I have tried reinstalling Chrome, tested firefox, no difference.
    This applies to all program, if I open Steam it can go up to 50% CPU usage. Even MS Paint uses up to like 10-20% while opening. This is what it looked like with steam open, excuse the sswedish language but You should be able to tell what it's in English :P

    Total Usage is 86%... how it added up to 86% I have no idea .
  3. Ok... I've run into a few problems with hamachi + kaspersky myself, ended up switching to Wippien, however I think I had to do a fresh install to get rid of problems even after uninstalling both hamachi and kaspersky, but let's not jump into conclusions, yours could be something different.

    Use Procexp to see which applications/services are using your CPU, it should add up to the total usage, also take a look to "DPC" or "Interrupt" cpu usage, those shouldn't be getting over 2%.

    Regarding your BSOD issue, try uninstalling hamachi, restart, uninstall kaspersky, restart, and finally run CCleaner to clean the registry, let's see if problem persists (if you haven't tried this already of course).

    Next step would be to stress test the CPU with Prime95 while monitoring temps and usage with Coretemp and Procexp, however it would be good to first see which programs are using your CPU while at idle as mentioned above.
  4. Edit function not working properly... wanted to add run procexp with admin rights.
  5. RaDiKaL_ said:
    Ok... I've run into a few problems with hamachi + kaspersky myself, ended up switching to Wippien, however I think I had to do a fresh install to get rid of problems even after uninstalling both hamachi and kaspersky, but let's not jump into conclusions, yours could be something different.

    Use Procexp to see which applications/services are using your CPU, it should add up to the total usage, also take a look to "DPC" or "Interrupt" cpu usage, those shouldn't be getting over 2%.

    Regarding your BSOD issue, try uninstalling hamachi, restart, uninstall kaspersky, restart, and finally run CCleaner to clean the registry, let's see if problem persists (if you haven't tried this already of course).

    Next step would be to stress test the CPU with Prime95 while monitoring temps and usage with Coretemp and Procexp, however it would be good to first see which programs are using your CPU while at idle as mentioned above.


    I did uninstall hamachi a few days ago. And I reinstalled kaspersky today. Let's hope the BSOD problems are gone. I also run ccleaner regularly. I am going to post a screenshot of the procexp within a few minutes with the results. Where do I find these "DPC" "interrupt" cpu usages?
  6. RaDiKaL_ said:
    Ok... I've run into a few problems with hamachi + kaspersky myself, ended up switching to Wippien, however I think I had to do a fresh install to get rid of problems even after uninstalling both hamachi and kaspersky, but let's not jump into conclusions, yours could be something different.

    Use Procexp to see which applications/services are using your CPU, it should add up to the total usage, also take a look to "DPC" or "Interrupt" cpu usage, those shouldn't be getting over 2%.

    Regarding your BSOD issue, try uninstalling hamachi, restart, uninstall kaspersky, restart, and finally run CCleaner to clean the registry, let's see if problem persists (if you haven't tried this already of course).

    Next step would be to stress test the CPU with Prime95 while monitoring temps and usage with Coretemp and Procexp, however it would be good to first see which programs are using your CPU while at idle as mentioned above.


    After letting procexp run for around 5-10 I came up with this graph, while idle, except for the parts I highlighted. The first part is where the program was starting, the 2nd one is opening already running chrome to check facebook really quickly (to see how much such a simple activity has on my system)

  7. Tom's not being good with me lately, I expand the picture button but no picture appears, could you upload it to say http://image-share.com/ and post the link please?
  8. RaDiKaL_ said:
    Tom's not being good with me lately, I expand the picture button but no picture appears, could you upload it to say http://image-share.com/ and post the link please?


    Sure thing!

    Here You go: http://imageshack.com/a/img537/4439/ijJCTI.png

    I could not upload it to image-share, unfortunately.
  9. Ok.... the red measure indicates heavy kernel usage, and I see your Interrupts going above 4%, that's not normal at idle, seems you have a DPC latency issue, please download and run this program:

    http://www.thesycon.de/deu/latency_check.shtml

    It shouldn't go above 500 microseconds (above the green line), leave it running for around 10min while you use Chrome and such.

    If the DPC latency goes above 500 it's possible a hardware issue, we'll see that after getting the test results.

    Also just in case, monitor your CPU and GPU temps.
  10. RaDiKaL_ said:
    Ok.... the red measure indicates heavy kernel usage, and I see your Interrupts going above 4%, that's not normal at idle, seems you have a DPC latency issue, please download and run this program:

    http://www.thesycon.de/deu/latency_check.shtml

    It shouldn't go above 500 microseconds (above the green line), leave it running for around 10min while you use Chrome and such.

    If the DPC latency goes above 500 it's possible a hardware issue, we'll see that after getting the test results.

    Also just in case, monitor your CPU and GPU temps.



    This does not look good...

    So my temps were pretty much like this the entire time, no gaps no nothing.

    The results of the program You linked were clearly BAD, this is what it looked like the last 30-40 secs (where I was browsing my local newspaper) of the 10 min test. It was always like that, from the beginning all the way to the end


    This was tested while casually browsing different sites, youtube, reddit and then news.
    EDIT: in case you can't see the pics:
    TEMPS (temps were fine all the time):
    https://imagizer.imageshack.us/v2/421x484q90/540/HLqWG5.png
    DPC Latency checker (it was always like this, from the beginning of the test all the way to the end):
    https://imagizer.imageshack.us/v2/596x496q90/661/k7Y67l.png
  11. Thanks for the links, indeed you have a truly awful DPC issue there, sadly it will be hard to find out which component is culprit, the procedure is that one described in the latency checker, where it says "Some device drivers on this machine..."

    So you need to disable one, verify if latency fixes (might need to restart pc to ensure the device got disabled), and then move on to the next component until the gets to stable values.

    Start by disabling audio, then Lan and/or WLAN, and check your HDD DMA mode in device manager->Storage Controllers, if it got reverted somehow to a value lower than Ultra DMA2 it will cause the latency you're suffering.
  12. RaDiKaL_ said:
    Thanks for the links, indeed you have a truly awful DPC issue there, sadly it will be hard to find out which component is culprit, the procedure is that one described in the latency checker, where it says "Some device drivers on this machine..."

    So you need to disable one, verify if latency fixes (might need to restart pc to ensure the device got disabled), and then move on to the next component until the gets to stable values.

    Start by disabling audio, then Lan and/or WLAN, and check your HDD DMA mode in device manager->Storage Controllers, if it got reverted somehow to a value lower than Ultra DMA2 it will cause the latency you're suffering.



    My Storage Controllers look like this: https://imagizer.imageshack.us/v2/404x176q90/673/zFdj5c.png

    Where as the:
    1st ATA Channel 0 didn't even have the DMA option
    2nd ATA Channel 0 had DMA Mode 5
    3rd ATA Channel 0 had DMA Mode 4
    1st ATA Channel 1 didn't even have the DMA option
    2st ATA Channel 1 didn't even have the DMA option
    3rd ATA Channel 1 didn't even have the DMA option

    The rest didn't have the DMA option

    I Noticed this under "networks card" :
    https://imagizer.imageshack.us/v2/256x50q90/538/6SPf7L.png

    is it something I should worry about and/or fix?

    I am going to try disabling them one by one. If I for example disable audo and notice nothing has changed, do I enable it or do I let it being disabled or doesn't it really matter?
  13. RaDiKaL_ said:
    Thanks for the links, indeed you have a truly awful DPC issue there, sadly it will be hard to find out which component is culprit, the procedure is that one described in the latency checker, where it says "Some device drivers on this machine..."

    So you need to disable one, verify if latency fixes (might need to restart pc to ensure the device got disabled), and then move on to the next component until the gets to stable values.

    Start by disabling audio, then Lan and/or WLAN, and check your HDD DMA mode in device manager->Storage Controllers, if it got reverted somehow to a value lower than Ultra DMA2 it will cause the latency you're suffering.



    I disabled audio, didn't notice any difference, then I disabled my network adapter (card?) and noticed something that MIGHT be a difference (the DPC was lower, around half) I then re-enabled it and this happened: https://imagizer.imageshack.us/v2/561x485q90/909/BT4Sc3.png

    I don't know what to check next, which devices or something completely else ?
  14. try reinstalling your NIC drivers, perhaps newer ones and restart pc, lets see how your latency is afterwards.
  15. RaDiKaL_ said:
    try reinstalling your NIC drivers, perhaps newer ones and restart pc, lets see how your latency is afterwards.


    Unfortunately, it's the same as before. No difference :(
  16. Could be the CPU....... disable lan and audio, then run prime95 4+ hrs (better during night) lets see if it's still stable. Log temps and voltages ofc during test.
  17. RaDiKaL_ said:
    Could be the CPU....... disable lan and audio, then run prime95 4+ hrs (better during night) lets see if it's still stable. Log temps and voltages ofc during test.


    How do I log temps and voltages ? Is there an option before I run Prime95 ? Is this the program You are talking about : http://www.mersenne.org/download/ ?

    When I disabled lan/wlan this is what I disabled: https://imagizer.imageshack.us/v2/256x55q90/540/LhyNB8.png (the highligted one). Is that the one I should disable?

    And when I disabled Audio, I disabled all 3 of these: https://imagizer.imageshack.us/v2/245x76q90/631/FEK9TD.png

    Am I doing anything wrong?

    EDIT: Also... do I just launch the program, log in to my GIMPS account and then just let it do its work for 4+ hours ?
  18. Yes that's the program.

    Yes you have to disable the Gigabit one.

    Also fine with audio.

    For monitoring you need another software, Coretemp will be enough: http://www.alcpu.com/CoreTemp/

    Once up and running go to Tools-> logging on.

    As for Prime95 no need to log into account, with the "just stress test" is enough, then go to options->torture test, and select Small FFT test.
  19. RaDiKaL_ said:
    Yes that's the program.

    Yes you have to disable the Gigabit one.

    Also fine with audio.

    For monitoring you need another software, Coretemp will be enough: http://www.alcpu.com/CoreTemp/

    Once up and running go to Tools-> logging on.

    As for Prime95 no need to log into account, with the "just stress test" is enough, then go to options->torture test, and select Small FFT test.


    Very well...I might let it run during this night, if I don't I will let it run next night. A result will be obtained either tomorrow or the day after.

    When I stop the prime95 test, how do I log the results or do I just screenshot my screen at the moment when it's done?

    Thanks for Your help so far! :)
  20. Once you stop Prime95 take a look at each instance per core, there shouldn't be any error counts as simple as that.
  21. RaDiKaL_ said:
    Once you stop Prime95 take a look at each instance per core, there shouldn't be any error counts as simple as that.


    I let prime95 run for 12 hrs and 39 mins, here's the results: https://imagizer.imageshack.us/v2/1077x624q90/537/bNUNul.png

    For the temps... no core went above 83 Celsius. Anyway, here is the entire log : https://www.sendspace.com/file/v8spvy

    With Virustotal scan: https://www.virustotal.com/sv/file/9550cfaa8db8011a537b480f2747192835d2872c3ff23a9d2427ca82dc7bce35/analysis/1422187830/

    Does this mean that it's only a driver issue? What's next step? Reinstalling Windows is probably the last thing I want to try, even thought it might be the easiest :(

    EDIT: I am not sure if this is needed but I'll upload it anyway... here's the CoreTemp dump.txt : https://www.sendspace.com/file/vrmrdl
  22. Oh my... it started at 60ºC while at midnight! you clearly have an overheating issue, your CPU should idle at around 25-40ºC at most (on a hot day with a stock cooler) and never, never go beyond 70ºC...

    It's time to clean all the dust inside the case and most importantly apply new thermal paste, there's a lot of video guides in youtube, high temps will cause the CPU to throttle down resulting in lower performance and instability, so fix that right away.
  23. RaDiKaL_ said:
    Oh my... it started at 60ºC while at midnight! you clearly have an overheating issue, your CPU should idle at around 25-40ºC at most (on a hot day with a stock cooler) and never, never go beyond 70ºC...

    It's time to clean all the dust inside the case and most importantly apply new thermal paste, there's a lot of video guides in youtube, high temps will cause the CPU to throttle down resulting in lower performance and instability, so fix that right away.


    The computer was already turned on and had been so for about 12 hours when I started the test ( I restarted the comp right before starting the test though), that explains the high start temp. It has always been like this (high temps)
    I cleaned the dust 2 days ago, so that's not the issue, the thermal paste on the other hand... will be a mini project in a few days.

    I am 99 % sure that my problem still will persist; because, directly after booting up my comp it's at 30ºC and still as slow as when it's at 80ºC. My computer has always had heating issues, my gpu had that too before I changed it, the gpu is fine now stays at 40-50ºC, tops (radeon hd6870).

    So the hunt for the faulting driver (or the error if it's not a driver) continues! :S
  24. RaDiKaL_ said:
    Oh my... it started at 60ºC while at midnight! you clearly have an overheating issue, your CPU should idle at around 25-40ºC at most (on a hot day with a stock cooler) and never, never go beyond 70ºC...

    It's time to clean all the dust inside the case and most importantly apply new thermal paste, there's a lot of video guides in youtube, high temps will cause the CPU to throttle down resulting in lower performance and instability, so fix that right away.


    I have now changed the thermal paste and the temps are indeed A LOT better, but my problem is still as bad as before. What to do now? I feel like reinstalling Windows is next step but that's really the very last thing I want to do :S
  25. Best answer
    You could create a new partition and install Windows in it, just the OS + drivers to see if problem persists, if it gets fixed well then go on with installing all else in it and format the other partition, if problem doesn't dissapear... I'd say your CPU is failing and is time to replace it.
  26. RaDiKaL_ said:
    You could create a new partition and install Windows in it, just the OS + drivers to see if problem persists, if it gets fixed well then go on with installing all else in it and format the other partition, if problem doesn't dissapear... I'd say your CPU is failing and is time to replace it.


    Right now I have 2 partitions on my hdd, 1 partition of 80-100 gb for OS, and the rest for games, programs and storage. Don't I have to format at least 1 of the partitions in order to create another partition and have 3 partitions in total?
  27. No, you could resize your games partition to create a new one using the free space you want to allocate for it, Windows 7/Windows 8+ (I guess Vista as wel) Disk Management is capable to do it, however I've never used it for that, usually I use EASEUS Disk Partition to do it.
  28. RaDiKaL_ said:
    No, you could resize your games partition to create a new one using the free space you want to allocate for it, Windows 7/Windows 8+ (I guess Vista as wel) Disk Management is capable to do it, however I've never used it for that, usually I use EASEUS Disk Partition to do it.


    Then that is what I am going to do! I have the partitions C (OS) and D (Other), if I create another partition it will most likely be E (which I install second OS on). Can I use the same cd key that I've used for the C windows as well? I have win 7 64-bit and planning on installing the same.
    How do I choose which windows to boot into when both are installed?
    And... if I notice that the computer is still as slow as it is now... can I remove the newer Windows and put the "extra" storage, which I will get from E (Windows 2) into D (Other)?
  29. yes you can use the same cdkey, once both windows get installed you will get a prompt menu right after POST, you'll see 2x Windows 7, right after the installation the new one should appear selected by default.

    If problem persists you can restart your pc, enter your old windows installation and use again disk management (or EASEUS) to format the E partition and then merge it back with your D to recover that space.
  30. RaDiKaL_ said:
    yes you can use the same cdkey, once both windows get installed you will get a prompt menu right after POST, you'll see 2x Windows 7, right after the installation the new one should appear selected by default.

    If problem persists you can restart your pc, enter your old windows installation and use again disk management (or EASEUS) to format the E partition and then merge it back with your D to recover that space.


    Thank you very much for everything! I will install windows on another partition during the weekend and then come back with how it went.

    One last question... Will I have to reinstall all games/programs in the new OS ? Let's say I have Tetris installed now on this OS, I install another OS. Will I be able to play Tetris without installing anything?
  31. If you are going to make the switch to the fresh installation then yes, most of your software/games will need to be reinstalled, some games like those from Blizzard/Steam can be copied from your older installation and will run with no problems, other games will need a fresh install.
  32. RaDiKaL_ said:
    If you are going to make the switch to the fresh installation then yes, most of your software/games will need to be reinstalled, some games like those from Blizzard/Steam can be copied from your older installation and will run with no problems, other games will need a fresh install.


    Thanks once again! I will return when I've installed Windows
  33. RaDiKaL_ said:
    If you are going to make the switch to the fresh installation then yes, most of your software/games will need to be reinstalled, some games like those from Blizzard/Steam can be copied from your older installation and will run with no problems, other games will need a fresh install.


    Turned out to be some strange software issue as it is working normally now after a fresh install of windows. I installed all drivers and everything and I'll delete the old Windows to free up some space. Thanks for your help!

    The thread can be closed
  34. Glad to see the problem is solved.
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