well purchased and had installed 5 days ago..f700bt unit was bought from bestbuy...so after the install unit worked flawlessly didnt have any problems no restarting issues as ive read or anything..so fri morning i heading on a trip back home in michigan when i was bout 2hrs away and all of a sudden it would kinda freeze up and restart then it would play again did that for bout 30 min as i contunied to drive..then it restarted on its own like it did every other time but no screen came on,nothing playing,no sound,no nothing just a black screen..the map,menu n eject buttons illuminate for approx