There are serveral ways to run a program after Windows startup.
Task Scheduler
Using Task Scheduler is the most convenience way to do this job. There is an example in Dropbox/Journey/Toolbox/FinalSpeed/Windows CLI Client/启动 FinalSpeed 计划任务.xml that indicates how to use Task Scheduler to run finalspeed in the background.
Startup Folden in Start Menu
The startup folden is located in C:\Users\[Username]\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup. You can put any program inside it that will be executed after user login. Be aware that the program is run foreground, means that there would be a black cmd windows if you run a bat file.