Why can't I start my phone?

[Windows Central Question]

Cannot start my phone!!!

Hi. I was fiddling with my 920 when I entered Device and hub setttings. Did not know what it was so entered and pressed an option ( dont know which one Buttt think it was about adding a device ). The phone asked me to restart And I complied......... Now it will not start.Hellllpppppp PLLLLLLLEEEEEAAASSSE