Hey @Jenn1313,
Greetings from the Roku Community!
We understand you're having a problem with the Roku Express because you're getting a blank screen when it powers up. We're happy to help.
Please check out this support article here on what to do if you cannot see the picture from your Roku streaming player on your TV.
We hope this helps. Keep us posted if the problem persists.
Cheers,
The Roku Community Team
John
Roku Community Moderator