Could you help me overclock my cpu?

when i tried to watch movies or play games on my compaq presario cq40 amd turion x2, it just slows down n i cant even play games or watch any movies anymore. half an hour later it just shut down by itself. i believe its overheated. i tried using the amd overdrive but it crashed many times. i dont...

Should I overclock my gtx 550ti? and how much? would I notice a difference? How would I do this? Could you guys answer these for me? I also have a i7 3770k, and 16gb ram.. Not sure about the psu how would I check?

Is there any tut for Overclocking CPU I need it so baaadly please :cry:

I have a weird problem I have never over clocked anything in my computer, but one of my games shut down and the error message I got what a blue screen that said over clocking failed. :huh:

i have a geforce 880GTX graphics card i overclocked the core clock from 592 mhz to 632mhz memory clock 921mhz to 1053 mhz i am wanting to know how can i know if overclocking it to this is ok is there any signs that tell you you've overclocked too much