CPU usage 100% Win 7

Once you start Windows update, it will continue even if you shut it down, and even through a restart.  If you have started WU and not allowed it to complete, this could explain what you see.  WU for Windows 7 has been extremely poorly serviced by Microsoft for nearly a year now.  Expect WU to sometimes take an overnight.  I had one a week ago or so take 17.5 hours. to complete.

When you start your computer, open Task Manager.  Look at the CPU percentage in use.  Do not start anything until that percentage drops well below 10%.  If you see it continues well above that -- say 25 to 75% for a long time, there is a process taking place that you must wait out.  Chances are, it is WU.

My second suspicion is the game itself has a bug.

Third is your video card or its driver.

These are some places and things to look at to help on your diagnosis.

I agree with Canadian Tech you are not done with updates and you have a lot more to come.  I also agree with waiting it out until you have all the updates needed for install. after everything is up to date and you are still getting the 100% cpu usage I would then go and delete Windows 10 updates that I am 100 % positive you have them and they will make your comp cpu usage to be 100% all the time.  When you are done with updating I suggest you look for these installed Win 10 updates and remove them to bring your cpu usage back to normal.

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Also another fact to look for is on some machines Microsoft Security Essentials will without a doubt make your comp run hot and will use 100% cpu always and it happened to me thats why I use a different antivirus and I shut down MSE. Hope this works for ya and as soon as you are all updated let us know how you make out

Hey,today i finished windows update.I got 109 updates installed.But now my whole computer is slow as ****.I checked task manager and mscorsvw.exe is using 50%.The computer is on 100% all the time now...Any help?

Windows update is not complete yet.  A lot of the work takes place after the restart.  Wait it out.  Then check to see if there are more updates.  There may well be another cycle or two to go through.

Once you start Windows update, it will continue even if you shut it down, and even through a restart.  If you have started WU and not allowed it to complete, this could explain what you see.  WU for Windows 7 has been extremely poorly serviced by Microsoft for nearly a year now.  Expect WU to sometimes take an overnight.  I had one a week ago or so take 17.5 hours. to complete.

When you start your computer, open Task Manager.  Look at the CPU percentage in use.  Do not start anything until that percentage drops well below 10%.  If you see it continues well above that -- say 25 to 75% for a long time, there is a process taking place that you must wait out.  Chances are, it is WU.

My second suspicion is the game itself has a bug.

Third is your video card or its driver.

These are some places and things to look at to help on your diagnosis.

17.5 hours?!Daaaamn.That is quite alot to wait.Also about the CPU percentage svchost.exe is using 50% and other is system idle process.About the second suspicion i dont think so.It doesnt happen just to LoL,i also tried to play other games as well,and same result-CPU percentage is 100%.Video card,well my computer specs are bad so it might be i dont know.But my question is:

I played LoL yesterday.Everything ran smootly.No lags or anything.And then suddenly,next day,everything is slow.

Anyways,i hope its WU.Thank you :)