psexec -i -s powershell.exe -ExecutionPolicy Unrestricted scriptname.ps1
x86 process on 64 bit OS :
psexec -i -s C:\Windows\syswow64\Windowspowershell\v1.0\powershell.exe -ExecutionPolicy Unrestricted scriptname.ps1
Scripts, oneliners and various technical articles
psexec -i -s powershell.exe -ExecutionPolicy Unrestricted scriptname.ps1
x86 process on 64 bit OS :
psexec -i -s C:\Windows\syswow64\Windowspowershell\v1.0\powershell.exe -ExecutionPolicy Unrestricted scriptname.ps1