Thanks for sharing your concern here in the Roku Community, @Trigger72653!
We understand that you don't have any option to select Power after choosing System. We're here to assist.
Could you please specify what option you would like to proceed with after the System? If you are trying to do a System Restart, you may skip the Power option if you do not see it and just hover your remote downwards, and there you'll see System Restart. If you do not intend to do a System Restart and you are looking for other options, please let us know, and we'll help you further.
We are looking forward to your response.
Regards,
Emman
Emmanuel-D.
Roku Community Moderator