How to start window service automatically as soon as the system get started.

Question

Hi,
I want to run a window service as soon as the system get start automatically. I have made a service it is working properly but the problem is that when i shutdown the system and come next day and start the system, the service is not started. I have to manually start the service but when i try and check by restarting the system, the service is started only. Please can anyone suggest!!!