thanks for the help, i did everything you mentioned and it looks like the pc is starting up faster and also shutting down faster than before. thanks a lot. I would like to ask you something else, in which it is related to this topic, i have noticed that sometimes when i push the turn on button to start up the computer it turns on all the fans and the light that shows the computer is actually on but it just stays on with all the fans running mad crazy and since i see that it doesnt go any where else but stay that way for as long as it wants, then i hold the same button for a few secs and it lights up the mouse and keyboard, which means the computer is going to start up normal. i would describe it like a freeze up in the beginning of the turning up process. what could be causing this, any idea?