After you install the Screenshot Keylogger software, it will start automatically when your computer start.
As you know, Screenshot Keylogger software is an fully invisible keylogger software, it's installation folder is hide, there is no shortcut icon on the Windows desktop, there is not a shortcut in the Start menu of Windows, so you can not start it manually.
If you stopped the Screenshot Keylogger, the only way to start it is reboot your computer
