You could always try installing the gpu driver with a custom install and just select the actual driver and PHYSX. Once that's done, if there still isn't any sound, go into device manager, audio device and roll back driver.well it seemed that the new nividia g force experience update has completely bodge my pc sound for that i dont know why, but as soon i started the installation of the new driver my pc has lost all sound and i have idea what to do to fix it,
many thanks to anyone that can resolve this matter,
windows 10 just so you all know