No gps signal 3 days now.

Question

It will not receive a gps signal. everything else is fine. I tried to reset the gps but it tells me to stop navigation first. I deleted all my recent addresses and favorites so I didn't have any but it still says stop navigation first. The screen that comes up is my last location and I can't or don't know how to delete it. Is there a hidden reset button or a service manual or something I can do? Plase help. Thank you