TONYBABY133 :
took it out of my mother put the cpu and the video card and memory in my boy pc and it wored fine
????
Are you saying your CPU out of your motherboard and put the CPU, GPU and Memory in your son's PC and it all worked? Sorry for the confusion but but I got lost at "took it out of my mother"
If that is the case, it points to a dying PSU, hard drive or motherboard (I know... what else is left
). I would look to take the PSU out of your son's PC and try it with yours and see what happens.