The battery is most likely low. Same thing happened to one of my V5s and I was pretty confused until I figured that the battery was low. Just pop in a new battery and when you connect it should be fine. Oh just in case, the correc battery is CR2032.
It's like the most regular v5 glitch, it resetts when battery low instead of showing the battery low screen, it's really annoying, but it has happened to a lot of people and a brand new battery will surley fix that!