C# Windows Service Run script united1.ps1

$WYNIK = "To dziala :D"
$WYNIK| Out-File D:\testy.txt

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Configuration;
using System.Threading;
using System.IO;
using System.Collections.ObjectModel;


namespace WindowsService_Exchange_AutoResp
{
    [RunInstaller(true)]
    public partial class Service1 : ServiceBase
    {

        int ScheduleTime = Convert.ToInt32(ConfigurationSettings.AppSettings["ThreadTime"]);
        public Thread Worker = null;

        public Service1()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            try
            {
                ThreadStart start = new ThreadStart(Working);
                Worker = new Thread(start);
                Worker.Start();
            }
            catch (Exception)
            {
                throw;
            }
        }
        public void Working()
        {
            while(true)
            {
                string path = "D:\\sample.txt";
                using(StreamWriter writer = new StreamWriter(path, true))
                {
                    writer.WriteLine(String.Format("Serwis TESTOWANIE "+DateTime.Now.ToString("dd/MM/yyyy HH:mm")+""));
                    writer.Close();
                }
                //d2 - DZIALA

                ProcessStartInfo processInfo = new ProcessStartInfo();
                processInfo.FileName = @"powershell.exe";
                //execute powershell script using script file
                //processInfo.Arguments = @"& {D:\Untiled1.ps1}";

                //processInfo.Arguments = @"& {Get-Process | Out-File D:\wynik2.txt}";  //dziala
                processInfo.Arguments = @"& {Start-Process powershell -argument '.\D:\Untiled1.ps1 -UseCached -RunReport -Silent'}";
                //processInfo.Arguments = @"–ExecutionPolicy Bypass -File ""D:\Untiled1.ps1""";
                processInfo.RedirectStandardError = true;
                processInfo.RedirectStandardOutput = true;
                processInfo.UseShellExecute = false;
                processInfo.CreateNoWindow = true;

                //start powershell process using process start info
                Process process = new Process();
                process.StartInfo = processInfo;
                process.Start();

                Console.WriteLine("Output - {0}", process.StandardOutput.ReadToEnd());
                Console.WriteLine("Errors - {0}", process.StandardError.ReadToEnd());
                //Console.Read();
                //koniec d2

                Thread.Sleep(ScheduleTime*60*1000);

            }
        }
        protected override void OnStop()
        {
            try
            {
                if ((Worker != null) & Worker.IsAlive)
                {
                    Worker.Abort();
                }
            }
            catch (Exception)
            {

                throw;
            }
        }
    }
}

process.StartInfo = new ProcessStartInfo
{
	WindowStyle = ProcessWindowStyle.Hidden,
	FileName = "powershell.exe",
	Arguments = $"-ExecutionPolicy Bypass -File \"{path}\"",
	WorkingDirectory = Path.GetDirectoryName(path)
};

Console.WriteLine("Output - {0}", process.StandardOutput.ReadToEnd());
Console.WriteLine("Errors - {0}", process.StandardError.ReadToEnd());