Red and green stripes

Also, before turning the console back on after a power cycle , reset the console power supply by removing the power cable from console for at least
10 seconds.

You may have to power off the TV as well.

Have you checked that your hdmi cable is inserted into the back of your xbox correctly?

If so are you able to try a different hdmi cable?

Dont the red blue and green lines mean something is wrong internally

Could have dirt or dust stuck in your HDMI cord, have you cleaned that out? Given it a blow? I always keep one of those compressed air cans around for my electronics.

Try this:

Thanks for coming to the forums. On the console
power cycle the console off, but do not turn it back on. Once off want you
to hold the power and eject button for 15 seconds or until you hear 2 beeps. This resets the resolution. Once done then try and go adjust the settings. I hope it helps.