Hello Chrisopher
The issue you described is usually a case that there is no job assigned to the endpoint. If this is a unmanaged machine ( no agent installed ) then and there is no job assigned under 'Initial Deployment' and the computer will restart. Also if this is an unmanaged computer it is imperative that you delete the computer from under 'New Computer' each time.
I will usually create a wait job or imaging job under 'Initial Deployment' by Double click on 'Initial Deployment' under the Jobs section > jobs tab and care a new job or pull in an existing job.
Also with computers using 'Initial Deployment' you can create a jobs list that gets displayed on the endpoint when it gets into Automation. Allowing the technican to pull down a desired image.
If you want to just hold open the 'Automation' environment create a wait job. This will hold open the agent allowing look peruse the environment or even push down a job from the console
Scott Andreas
Scott Andreas