Thanks both of you for your answers.
I successfuly updated the IRST driver. However when i launch the setup.exe of the CMI8788 driver for windows 8, the only choice i can make is to uninstall the current installation. I did it once, and the choice is still the same. I don't have anymore some sound now.
Did i do somemthing wrong ?
PS : i can't find my memory.dmp file, maybe CCleaner wiped it ?
