Can someone Help me fix my Xbox One???

A while ago my Xbox one would keep giving me error screens and the error said it was due to update. I've tried downloading the update offline but before the download can finish the console shuts off. Just now I tried turning on the console and the video dosent show on my tv or my monitor. I've tried putting it into recovery mode to try again but it just shuts off after a couple minutes or shuts off when i let go of eject and sync. If someone has a fix Please let me know!!!

:)