mr : BHK6
many thanks for your reply , in fact i am not able to use HP PC Hardware Diagnostics UEFI but i 'll try
and inform you that when i try sound at windows 7 and setup the hp driver get an error message "driver installation faild..." it make a "peep" with this message even when i enter to bios and press any key it make a " peep " from the speaker that's mean the sound card is fine and hardware not be a problem , it's true ???
i wait your reply and many thanks