I appreciate you letting me know that the issue must be on my end. The rig setup is fine and worked perfectly using PhoenixMiner 5.1 the last time I ran my start.bat file a few weeks ago. There was a power outage last night and there were pending windows updates and when turning on today the command doesn't work.

The rig consists of: Eight 8GB 580s.

I updated to the absolute latest PhoenixMiner 5.2 to see if it would fix the issue and still the same problem.

I was reading some older posts and horror stories of things accidental Windows Updates can do like change the registry of windows defender or update the graphics cards to a version that they shouldn't be, etc.. These are the things I am looking into. If you can think of anything else to look into, please let me know. It is very strange the command line opens and does absolutely nothing then just runs the pause command. No useful error logs or anything.