I'm having a recurring issue where my console gets stuck in the following loop:
1) After being booted up from shutdown (either instant-on or full shutdown), I get the startup screen but then nothing else. Just a black screen. No audio or video from the console.
2) Restart (either with a regular restart or a full shutdown + reboot). Console won't connect to Xbox Live, even though it's on a functional wired connection. Tried unplugging the ethernet cable and switching to wireless to test that, but it just gives the error that a network cable is still plugged in and can't switch to wireless.
3) Restart and begin again at step 1.
This happened on the first day and then seemed to resolve itself. But just now, I tried to start up AC Valhalla and the console shut off, and I'm in this loop again. I don't want to go through the hassle of a return, but it looks like it might be needed.
Edit: I just unplugged the power cable and booted back up. Got to the startup screen and the system froze and crashed. Power light on the front of the console flashed a few times and the system restarted. Now it's back to normal. I'm just wondering if this is a hardware issue or something that may be fixed with updates.