PLEASE HELP:- while doing vagrant up vm is not initialing getting error in INFO subprocess : while doing vagrant up vm is not initialing  getting error in  INFO subprocess: Starting process: ["C:\\Windows\\System32\\WindowsPowerShell rofile", "-NonInteractive", "-ExecutionPolicy", "Bypass", "-Command", "(new-ob cipal([System.Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Sy ]::Administrator)"]  INFO subprocess: Command not in installer, restoring original environment... in debug mode 
command :  vagrant init concourse/lite create a file but while doing vagrant up nothing is happening .
virtual box version :-Version 5.1.26 r117224 (Qt5.6.2)
windows:7 .
as i am new to this thing a step by step procedure would help a lot .