If any anti-virus software is installed, it may abort EDIUS starting, because EDIUS has anti-piracy mechanism and the anti-virus might detect it as malware. Please confirm below two points if EDIUS won't start.
Below folder added as Exclusion in the anti-virus configuration
Disable real-time scanning of the anti-virus. *If anti-virus software is quit, real-time scanning may be running in background and it may abort EDIUS starting. Please make sure that real-time scanning has been disabled.
Also, if below command prompt displayed while starting EDIUS, please configure environment variables as below:
Open Windows control panel and then double-click 'System' icon.
System properties will appear. Choose [Advanced] tab.