I've gone and done this now, and its whilst it's downloading i can see it has the same version number as the one i deleted, so to double check i'm not being stupid could you go through each step you want me to do, I went onto my files, went on download and created a folder in there called ''dell drivers'' i went on the link and downloaded something called ''RealTek ALC3266 High Definition Audio '' then put it in the newly created folder, then went on device manager and clicked ''sound video and game controllers'' then uninstalled realtek HD AUDIO and removed from system and then reset my pc then clicked on the folder i had made and installed the download. Does that sound right?