When you promote the server to domain controller and failed, you are still left with its metadata inside Active Directory Domain. Because of this, you may face some of the following issues:
There are two ways you can use to start service with a specific user account; GUI and PowerShell (I call it shiny method). However, we will look into both methods.
Starting a Service with Specific User Account Using GUI
Type services.msc in Run and then click Enter from the keyboard. Find the desired service. Right-click it and then click Properties