Realtek HD Audio Driver install. Error code: 0x00000070

Hi, Laptop: Dell XPS13 had problems with my audio driver as lots of other posters also have with their XPS'. I tried ALL the usual advice: updates, F2 and F12 stuff, headphones, whatever, everything that was suggested and more on these forums and I can't find my answer... I have updated/uninstalled/reinstalled drivers for a couple of times now and am at a situation where now I have no audio driver, and when i try to install the main one from the dell site, i get the above error code. Any suggestions? Many thanks, greatly appreciated, Scott