When I turn on my Garmin 840 edge, it says "Power Sensor Found, New-Sensor detected: "P Quarq AGN39740" Switch connection from "Power 39740"?" Regardless if Press accept (check mark) or decline (the X), it will ask me the same question over and over again. I can't use the device because of this. I have held down the power button for 10 seconds multiple times to restart it. I recently got a new cell phone, maybe that's the problem? What should I do? Thanks.