High CPU load without any reason !!!

Hi,

1st I have Intel C2D E7200 2.53GHz 3MB Cach and 4GB of DDR2 RAM

2nd now i am using Windows 7 HomePremium 64-bit and installed the RC version of SP1

i am used to use Firefox all the time and it's always opened with about 10 or more tabs and beside this KIS,IDM,Yahoo! Messenger,Media Player Classic playing BRRip's movies or non HD videos , and sometimes i open ProgDVB also

all this and more was working fine and even i can't load 50 or 60% of processor and ram but i don't know what make a full usage 100% from CPU , is it firefox and it's plugins or there is something wrong with the RC SP1 or what ??

what is System Idle Process in Task Manager ?!

http://img521.imageshack.us/img521/2...2010093413.png

http://i54.tinypic.com/8vqn0p.jpg

Can any one help me detect where is the problem ?!

richc46 said:

Do a clean boot and tell me what happens

How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

now i am using this boot method and i can notice that a lot of services is off

CPU Usage from Task Manager is around 25% running Firefox and ProgDVB

I am using Kaspersky Internet Security 2011 and it's runs now although i disabled it from Msconfig ?!

now playing also MKV 720p file and load is now about 40%

Thanks a lot for your help and i will try your suggestions

thanks again

The problem was in KIS 2011 , i uninstalled it and back to 2010 version and know my PC is normal again :)

Thanks a lot