Hi Everyone.
Well, It SEEMS that I have got rid of the problem by turning off one features of the mouse, namely the double click speed. I have set it to slow completely and now its ok. But When I installed Window Media player 11, the problem was back.
Then I restore my PC and now, this problem has not happen again HOPEFULLY.
I have been able also to switch off my PC completely by enabling a feature in "power" called APM. It was enabled in Bios. So, it matched!!
One week again with those problems and surely, I would have been mad.
All these crazy things can really make you sicks!
I want to thanks all those who has try to help me, particularly rgary75, Rik and others.
If the problem come back, I will make a post! But I HOPE NOT!!!!!! lol