Window server died never ending boot Catalina

MacBook Pro mid 2012 is failing to boot 3/4 of bar is loaded then spinning wheel appears and its never ending. In verba mode its stuck on Window server died pid 388,442,444 etc What should i do Fresh macOS Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina install It worked on mountain lion