Basically, I screwed up. I d/l The latest version of Nero (Nero_Platinum_2019_Suite_v20.0.05900___Content_Pack_1-2). It worked fine, except one minor problem. For the life of my, I forgot what. Anyway, I uninstalled it (I thought). Like a fool, I wanted to make sure there was absolutely nothing... mentioning Nero was on my compute; so I got into my registry. I looked up everything that Nero was in it and deleted it. Like I said, I screwed up. I should have made a copy of the registry before I did anything to it. :-( Well, I did it, rebooted it and everything ran fine. I tried again to install Nero again. there was a major f***-up. Near the end of the installation, it wouldn't complete. "The installation source of this product is not available. Verify that the source exists and that you can access it." I tried to use earlier registry backups; but to no avail. Knowing that, am I SOL? I tried to use the latest version of Windows; but it too wouldn't happen. Which leads me to another problem. I have a USB drive which I loaded the newest Windows as I boot drive. I got into my BIOS and specified that drive as 1st. Guess what; it wouldn't let me. All things being the same, would you please help me. I'm out of options. Take care and God bless.