High CPU Usage

Hi guys
lately I changed my windows from 7 ultimate to another 7 ultimate
then my hell started ... my CPU Usages just jump high with out any reason ... when no program running it jump to 15% ... browser take more than it should take ... and if I open any online game it jump to 70-80% which should not happen I used to open all things I want at once and have near 20% cpu usages
I tryed every think closed back gorund programs and scan for virus or malwares I tried a lot of things but still nothing no change still high ...
how can I fix this ?!!!!
 

Jad Chaar

Posts: 6,481   +976
Hello, can you post your full system specifications? Also, are you sure this new Windows 7 copy is legitimate and not pirated?