CPU usage at 100%

So i have a new-ish 2010 Toshiba satilite Notebook with a T-4300 Intel dual core processor at 2.1 GHZ and 4 gigs of DDR3 ram 500 GB harddrive and all that. So i have been playing Lol for like 6 months now and all of a sudden i go down to like 6 FPS and i check my task manager and my CPU is at 100% the only other thing i have open is Skype and maybe the itnernet browser, the cpu usage iwll go down like 30 seconds later. Anyone know the cause of this?
6 answers Last reply
More about usage
  1. Do you have an antivirus installed??If yes then turn off all the automatic updates and automatic system scans.
    What is CPU usage when the system is idle??What operating system are you using??
  2. I would run some spyware, virus, and some windows repair scans in regular mode and than in safe mode. And probably a registry cleaner.

    I am not sure if overheating can cause more CPU usage or not, but if you got a lot of dust in your notebook I would remove it.

    I had a similar problem like 4 months ago with my notebook. One day my games were running fine, they next everything with way down. It turned out that it was a keyboard cover I bought that caused some overheating issues. Since my notebook keys are designed have more airflow for the graphics card.
  3. Overheating cannot cause more cpu usage; there's no connection at all. What overheating *can* do is cause LESS cpu/gpu usage. They'll both throttle down when they hit their temperature ceilings. However, this shouldn't cause your strange 100% problem. That sounds like a virus to me, especially since it hasn't happened before.
  4. sayantan said:
    Do you have an antivirus installed??If yes then turn off all the automatic updates and automatic system scans.
    What is CPU usage when the system is idle??What operating system are you using??

    It's at about 5% when the computer is idle and i am using windows 7 and no antivirus is installed
  5. joho128 said:
    It's at about 5% when the computer is idle and i am using windows 7 and no antivirus is installed


    When you are playing games the cpu would hit 100% but it is due to overheating that your gpu would be downclocked and you get 5fps.So I would suggest you to ensure better cooling.Try cooling pads which solves the overheating problem in most cases.If it were due to virus then your CPU usage should be very high even when your computer is idle.Also win 7 is not easily affected by virus .
  6. Sounds like a virus to me, grab a copy of Malwarebytes, update it, then run a full system scan.

    http://majorgeeks.com/download.php?det=5756
Ask a new question

Read More

CPUs