Xbox 360 stops working (but power is orange), what to do?

Moinson, so I have a problem and although I have yesterday quite normal what played on the Xbox and wanted to play again today. The games were still in there yesterday, but the Xbox just does not work, but the PSU lights up orange, but the Xbox itself does not work, not even the circle lights up green.

Either the cable is not properly in the power supply or the console or the cable has a loose connection or your Xbox is broken