I have a domain with an 03 server and 2012 (r2 I think) server. The 2012 box is GC and has all the roles, but the 2k3 server is still a member of the domain etc - the domain function level is obv 2003. Glad the 03 box wasn't decommissioned yet as the 2012 box got hit with ransomware. Unfortunately their usb backup drive was also encrypted and they had no offsite setup. I need to reload the OS as I can't get SQL running again - cant uninstall it, cant install it, cant repair...its all kind of jacked. Whats the best process to get it reloaded and back as the GC of the domain? Do I need to assign the roles to the 03 box first, then dcpromo, then reinstall OS and probably with a different name then before for good measure?