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[HELP PLEASE] CPU 100% Use

Discussion in 'BlackHat Lounge' started by axcer, Mar 19, 2012.

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  1. axcer

    axcer Regular Member

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    Problem is solved!
    May be someone will come up with similar type of problem, any of the suggestion posted in this thread might work.
    I hope mods won't delete this thread. ;)


    ""I don't know whats wrong.. I can't open 'download' folder in my PC. There are some videos downloaded from Youtube.. Some guitar lessons Lol
    Whenever I open the 'download' folder, indicator shows CPU is being used 100%. And every time I've to restart explorer.
    I scanned that folder with Avast, it shows no virus.

    Except formatting, Any good suggestion would be highly appreciated.""
     
    Last edited: Mar 19, 2012
  2. LakeForest

    LakeForest Supreme Member

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    Open task manager and end any tasks that you don't need.

    If that doesn't work, try a system restore to a date when things were ok
     
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  3. SwagBotPlus

    SwagBotPlus Newbie

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    I'd suggest browsing to that directory using the command prompt. List the contents of the directory and see if there is anything unusual. To do this go to start then run and type cmd then press ok, windows 7 just go to start then type 'cmd' in the search and click the cmd.exe that shows up. Use the command "CD" to change to the download directory and the command "DIR" to list the directories contents. Then use the command "DEL" to delete any "bad" files or unwanted files in that directory. After that, try to browse the directory again normally. Let me know if that helps.

    Some example commands that I suggested above to show how to use them:
    cd "My Documents"
    dir "My Documents"
    del badfile.exe
     
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  4. Amsterdammer

    Amsterdammer Power Member

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    I like AVG and have it installed, but I found last week that visiting the wrong site can cause it to shutdown.

    Reason I am saying this is that the 100% CPU load sounds like a virus. Can't think of the class name right now.
    My guess is you downloaded something else recently too. The Youtube video's are not the problem here I think.

    I would probably start with a visit to housecall (trendmicro) for a free online scan.
    Also, try deleting the folder without opening it, you will probably run into some problems. If you do, start in safe mode and try again.
    Afterwards, reinstall AVG...

    Hope this helps. :)
     
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  5. axcer

    axcer Regular Member

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    Do I need to download software from trendmicro or it scans online?
    I'm asking cuz theres a option to download for 32 bit and 64 bit.
    I tried this one but I dont see any .exe files there in folder.

    If I apply system restore all downloaded will be gone or not? Its been a long time since I did system restore Lolz
     
  6. HostStage

    HostStage Jr. VIP Jr. VIP Premium Member UnGagged Attendee

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    REcently i came accross a similar problem on a customer's dedicated server.

    The CPU was used fully because of a nasty program which has set up "open SSH" which drived the CPU to 100%

    Anyhow, you may want to start the tasks manager and spy the process tabs, you sort it by CPU use, and you kill / identify the programs which is using your CPU.

    If you use outlook, you may want to clean it up from time to time too. (recent problem here)
     
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  7. boosters

    boosters Regular Member

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    Kick out Avast and scan through either Bitdefender Online Scanner or Norton Online Scanner. Bitdefender will detect and remove those viruses..
     
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  8. bertbaby

    bertbaby Elite Member

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    You can try malwarebytes but if you can't get control of your computer then lookup a boot disk with a virus program. Did you try running in safe mode?
     
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  9. extremephp

    extremephp BANNED BANNED

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    Few things that you should consider doing :

    1. Get on SAFE MODE and see if there are some random exes or autorun.ini files which initiates an exe when the folder starts. (You may have to select to show hidden files to see the .ini files)

    2. Avast Bootscan
    3. Malwarebytes system scan.
     
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  10. OldSalt

    OldSalt Moderator Staff Member Moderator Jr. VIP Premium Member

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    Open the Task Manager and look at what is using the clock ticks (what is using the highest CPU percentage). You can sort on that field by clicking it... most of the time I have to click on it twice to make it sort top to bottom. If I leave my Boinc screensaver (look it up - I support the SETI project) to it's default settings, it will use 100% of the remaining CPU that I'm not using - for all 8 processors. I turned it down simply because I don't want my computer running the CPUs HOT 24/7. It just quietly uses 25% of my CPU now. If you don't have something running in the background that you installed, you have to look to see what's running. If you don't recognize it, open up a browser and search for it, you'll probably find it right away.

    I gather that this is a change as to how things have been... has it been gradual or did it happen suddenly? How much ram do you have and how fast is your CPU? Just some general questions...

    *Edit* no matter how much RAM you have installed - another thing is to right click on 'my computer' and click properties (Win 7 - right click 'Computer') and see how much is being used - you can can also see that in the Task Manager... maybe one of your RAM sticks isn't working...
     
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    Last edited: Mar 19, 2012
  11. Amsterdammer

    Amsterdammer Power Member

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    It is an online scan but you do need to download a small program. :)
    The 32 or 64 thingy depends on your system.
    If you have more than 4 gigs of ram, you are probably using a 64 bit system.

    32 bit systems can't handle more than 4 gigs of ram. ;)

    Sorry for the late reply, was distracted by an awesome video Oxonbeef posted.
     
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  12. axcer

    axcer Regular Member

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    I have 32-bit system, 2 Gs RAM.
    I noticed this problem today. Not sure about yesterday cuz didn't download anything.
    I downloaded few videos from YT today and I was trying to transfer to pendrive and then BOOM... CPU usage 100%

    What I did till now:
    1. Opened in safe mode
    2. used malewarebyte
    3. Scanned PC with Avast
    4. Housecall (running)
     
  13. axcer

    axcer Regular Member

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    Finally problem is solved! :cat3:

    Housecall did the work.

    And Thank You very much to all of you for your valuable suggestions. ;)
     
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  14. ferma231

    ferma231 Elite Member

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    Run CCleaner,

    It will delete everything you dont need + you will get more free space and then your PC should run faster

    It helped for me !