EC2 Windows Instance run python script at start

I have an EC2 Instance with Windows, and I need to run a python3/selenium code automatically right after it starts.

I have tried USER-DATA but no success.

The objective is set a process to run automated tests to our portal automatically after the instance boot, without any manual interaction.

I have tried creating an USER-DATA script like:

<script>
python c:\script.py
</script>

or

<powershell>
python c:\script.py
</powershell>"

I expected that at the end of boot it will start the python script, but no success