like I said in my first post
They said me to apply the Led Hotfix patch (2010-03v2) to solve the issue.
I did it but the problem is not solved.
The strange thing is that if I am now trying to re-Hotfix patch of LEDs, not finding my Virus.!
If I launch the VC, then my Virus connects with my computer normally.
However, last night I've opened my Virus and I decided to change the connection of two 330 Ohm resistors that connect the two LEDs on the panel board concerned.
I could also reverse the two pins 6 and 8 of the Hex-Inverter 74F04 on the mother-board, but surely the exchange of the two resistors is less invasive.