Hi, I am back again with what is probably a noob question. I recently got hold of a 2009 MacMini which has quite surprised me for the age of it. I am only using it for surfing the Net and using the odd app. I bought a Mini Display to HDMI lead and though there is a picture on the monitor there is no sound. This is the question, why am i not getting sound and is there a lead or setting i need to change, i have Catalina freshly installed on it if that makes any difference and can't find any settings unless i am missing something. Unable to connect to WiFi as well and wondering if the install of Catalina has messed something up, it had El Capitan when i got it, would i be better going back to that as i have a time machine saved. Any help appreciated