DISE Bootstrapper's purpose is to bootstrap ("Kickstart") a DISE player installation by automatically starting up the next logon. When it starts, it will prompt the user to insert a USB drive with the relevant DISE player installation package(s) (.exe files). As soon as a drive is inserted, Bootstrapper will run the installer provided on the drive and finally remove itself from the startup applications.
Read more: DISE Kickstart
Note: This will not install any DISE files, just cause Bootstrapper to run during startup - specifically it will add itself to the Windows registry entry "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce"
Simply exit the window. Bootstrapper will by default run again the next time someone logs on to the PC.