Welcome to the Roku Community, @simonita2!
Thanks for posting here in the Roku Community. Rest assured that we will help you get back on streaming on your Roku.
Please ensure that you have plugged your Roku device into the correct HDMI port on your TV. Use your TV's remote to set up the Roku on the corresponding HDMI port. If you have connected the Roku to HDMI 1 and have selected this port on your TV, you should be able to power up the Roku using the physical Roku remote.
To learn more about how to set up your Roku device, you may visit our website, Roku Support, and search the keyword "Set up" for guidance.
I hope you find this information helpful.
Best regards,
Carly
Carly Y.
Roku Community Moderator