Reply to High CPU HELP!!

Hey Guys,
Recently my Hp Pavillion DM4 beats editiong has had an extremly high cpu while traktor is open it never used to do it, its only recently, i have gone through and deleted heaps of programs i dont need or use and its still really high and sometimes in traktor tracks will start to stop and buffer mid through a track, I have run a security scan using norton and have defraged my computer please someone help , i have a gig this friday and need this problem resolved thanks