Unable to run .exe C# file built in VS2010

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C#

Hello!!!

I can't execute any .exe C# file that I've made.

For example I write the most simple code:

--------------------------------------------------

using System;
namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
         
                 Console.WriteLine("HELLO WORLD");
                 Console.ReadKey();
        }
    }
}

---------------------------------------------------

then I debug the file and it works.
But when i go to the .exe directly and try to execute it then it just keep "thinking" and does nothing!

I go to the Task Manager and the process is running BUT if i try to finish it it does nothing!

PLEASE HELP!

What I have tried:

I've tried to compile it with csc.exe but the problem is the same