Fix 'PowerShell Not Recognized as Internal or External Command' - How to Fix BitLocker 'Command Not Found' or 'Permission Denied'-Windows Terminal 504 Error: Step-by-Step Troubleshooting Checklist

Prepare
Execute
Validate
Document
Operational follow-up
- Record the exact option, command, or setting that changed the result.
- Keep a rollback note if the workflow affects shared files or team settings.