Execution of script disabled by the system in PowerShell

Issue:

     Execution of the Shell Script is blocked by the Rules of PowerShell.

Check:

     Start Powershell prompt as the Administrator, and type the following,

             Get-ExecutionPolicy

     If it shows as 'Restricted'.

     You have to reset the policy to allow You to execute by typing,

Syntax

Set-ExecutionPolicy [-ExecutionPolicy] {<Unrestricted> | 

<RemoteSigned> | <AllSigned> | <Restricted> | <Default> |

<Bypass> | <Undefined>} [[-Scope] {<Process> | <CurrentUser>

| <LocalMachine> | <UserPolicy> | <MachinePolicy>}] [-Force]

 [-Confirm] [-WhatIf] [<CommonParameters>]   

 Description

          The Set-ExecutionPolicy cmdlet changes the user preference for the Windows PowerShell execution policy. 

Parameters

-ExecutionPolicy <ExecutionPolicy>

Specifies the new execution policy. Valid values are:
-- Restricted: Does not load configuration files or run scripts. "Restricted" is the default execution policy.
-- AllSigned: Requires that all scripts and configuration files be signed by a trusted publisher, including scripts that you write on the local computer.
-- RemoteSigned: Requires that all scripts and configuration files downloaded from the Internet be signed by a trusted publisher.
-- Unrestricted: Loads all configuration files and runs all scripts. If you run an unsigned script that was downloaded from the Internet, you are prompted for permission before it runs.
-- Bypass: Nothing is blocked and there are no warnings or prompts.
-- Undefined: Removes the currently assigned execution policy from the current scope. This parameter will not remove an execution policy that is set in a Group Policy scope.