If your Xbox One shows no signs of life, try the following solutions in order (roughly easiest to hardest). If your Xbox briefly turns on but then shuts itself off without warning, see the Xbox One Turns Itself Off wiki instead.
Cause 1: Device not plugged in
Check to make sure that the power supply is plugged into a power outlet and that the other end is properly plugged into the Xbox One.
Cause 2: No display detected
If the ‘Xbox’ light on the front of the console is lit, it won't start up unless it detects a working display. Check your HDMI cable connection. Try switching cables or ports on your TV.
Cause 3: Bad power outlet
If your device is still not turning on, try plugging directly into a different power outlet, not through a surge protector.
Cause 4: Internal power supply breaker tripped
Because the console has a built-in surge protector, you should not connect it to an external surge protector. If you connect the console to another surge protector, the console cannot reach the full power that is needed for optimal performance.
To reset the internal power supply, follow these steps:
- Unplug the power cord from the console.
- Wait 10 seconds.
- Plug the cord back into the console, and then press the Xbox button on the front of the console.
If the console turns on, the internal power reset worked. Do this step in the future if the problem happens again.
Cause 5: Bad power supply
If the power outlet is providing power, but the console still does not turn on then the power supply may be the issue. Check the light on the power supply; if the light is solid white or orange then the power supply is working properly. If there is no light, unplug the supply and let it cool for 20 minutes, then try plugging it back in. If it still does not light up then you need to replace the power supply.
Cause 6: Bad motherboard
If the power supply light is on but your device still does not turn on, then the motherboard may be the problem. If it is, you may need to replace the motherboard.
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