when i run any program like Mozilla Firefox or internet explorer or my compuer or any game or watching video my CPU usage become very high and i tried to reinstall my windows and still the same problem
As Rationale said, your system is very outdated. The only thing you can do is open the case up and use compressed air to blow out all the dust (compressed air won't endanger your parts as wiping them with a piece of cloth does).
As Rationale said, your system is very outdated. The only thing you can do is open the case up and use compressed air to blow out all the dust (compressed air won't endanger your parts as wiping them with a piece of cloth does).
As Rationale said, your system is very outdated. The only thing you can do is open the case up and use compressed air to blow out all the dust (compressed air won't endanger your parts as wiping them with a piece of cloth does).
I agree, he should make sure it's not overheating.
If it's started overheating so suddenly, then it's also possible a fan stopped.