How Do You Re-Set the X-Box?

[Pack4Ever]

I have a little issue with my X-Box. I turn it on and the menus come up in German and speak German and will not allow me to do any gaming!
This is a new problem. Normally I pop a game in and it will boot right up.
Has anyone ever experienced this? Is their any way to reset the X-Box or is this a service issue?ft:

This is bizarre and I'm not pleased. Any feedback is appreciated.
Thank you.

[Super Stu]

I had a screen full of guff come up the other day when I switched mine on, was accompanied by the circular LED flashing red. I assume it was a quick brainfart by the mod chip, quick on/off fixed it.

Is your X-Box modded?