Xbox One S black screen with a green bar on top upon startup

Microsoft haven't said it is. I believe the green Xbox One startup screen will stay, and the Xbox Series X/S will get the new Xbox boot up screen.

Hey Horse Feather!

The
System Update Troubleshooter has steps that can help - from the first page, select "I need to troubleshoot a system update error", then select which Xbox One model you're using (original, S, or X), and then select the "I am experiencing a startup issue"
option.

Give that a shot, and let us know if you see any improvement!

The scenarios described are stuck on green Xbox startup animation, or no green startup animation where my issue is green startup animation transitioning to black screen.

Hello @Kamonkey12!

Since you have already tried everything, we recommend you to Perform an offline system update. However, if the issue persists after the the offline update, it might be a hardware issue therefore your console should be serviced.

Device Support.

I would second this. If none of these work, I would have to say the game itself is damaged in some way.

Hi Kamonkey12! My name is Ricardo and I'm an Independent advisor ready to help you!

In this case you will have to perform a factory reset of your console, to do so follow these steps

On your Xbox console:

Unplug the network cable if you're using a wired network connection.

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 One S All-Digital Edition does not have an EJECT button. On this console you only need to hold the Pair button (steps 5 & 6) and then press 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.

***Note If you don't hear two power-up tones after 15 seconds, it means this failed. Likewise, if you hear any "power-down" chirps, that also means this failed.

You can release the Pair and EJECT buttons after the second power-up tone.

Once the console restarts, you should see the digital setup experience to guide you through resetting your console.

***Note The console restart may take several minutes. If you’re using a wired connection, plug your network cable back into the console. If you have never connected your console to the internet, you will need to connect at least once during the system setup process.