Vilero , no pb , you can do the swap of all my comments and pictures.

Thank's for all my dears... I'm going to try all these programms as soon as possible. I let you know my experience with them...

Chicomarx, the pb of switch-off randomly of my old computer is probably something else, otherwise it should work fine for a while when the machine is cold after few hours of stop! ... in another hand, a crazy fact is that the computer works fine outside my home, ....before it was the contrary! unfortunately nobody has been able yet to understand what's going on