I don'T know explicite what you mean... but a few programms could be help..
CC-Cleaner, tuneUp or Gamebooster for example..
Next point: Autostart.. Close all programms you don't need...
Gamebooster will do this for you befor starting game..
Tune UP will optimized your PC for best perfomance..
CC-CLeaner will delete all files that doesn't have any function..
Hope it helps a little bit
greetz Koka