No Xbox start up

My Xbox will no longer start up any longer.
When everything is plugged in the power brick shows an orange light sometimes white but whatever the colour when I press the power button it will light up but not start no startup screen or nothing and after at least 30 seconds the led shuts off on the console,so if anyone has any ideas I would appreciate the help.

Hey Adam,

I am having the same problem with my xbox. Did you ever solve this?