Why is my xbox not turning back on and how do I fix it?

Are you able to see video signal or everything's back?

Did you tried to start the troubleshooting menu in your console ?

"Power off your console, and then unplug the power cord to ensure that the console is completely powered off.
Wait 30 seconds, and then plug the power cord back in.
Press and hold the Pair button (located on the left side of the console) and the Eject button (located on the front of the console), and then press the Xbox button  on the console.
Note The Xbox Series S and the Xbox One S All-Digital Edition do not have Eject buttons. You can bring up the Xbox Startup Troubleshooter on these consoles by holding only the Pair button (steps 3 & 4) and then pressing the Xbox button .
Continue holding the Pair and Eject buttons for 10-15 seconds.
Listen for two “power-up” tones a couple of seconds apart. You can release the Pair and Eject buttons after the second power-up tone.
The console should power up and take you directly to the Xbox Startup Troubleshooter."

Source: https://support.xbox.com/help/hardware-network/...

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today despite this XXROSE02XX

May I know if you tried everything from this article?
https://support.xbox.com/help/hardware-network/...

My xbox does have ventilation. It turns on. It's when the xbox is restarting during the update that it isn't turning back on, on its own like it's supposed and not finishing the update

Hi Matt, my name is Rodrigo. I'm an Independent Advisor and a member of the Microsoft community and I'd love to assist you today.

I am sorry to hear that.

You can factory reset the console and see if it helps.

Press and hold the Pair button and then press the Xbox button on the console.

Continue holding the Pair button until you see the Troubleshoot Mode on your TV.

Select Reset This Xbox > Keep games & apps > Confirm the process.

Let me know if it works!

Hi, Angel. My name is Ron, I'm an independent advisor. I will be more than happy to help you.

Please try the steps from this link to sort out the issue, https://support.xbox.com/en-US/help/hardware-ne...



If that step doesn't work, please try the steps from this link to sort it out, https://support.xbox.com/en-US/help/hardware-ne...

If the steps above don't work, please also try connecting your console to a different wall outlet and then try turning it on. Let me know if it works.