My 245 Music has been great for two years and now suddenly is going crazy. It started with the GPS, which has been way off for a week or so. Then the stopwatch kept randomly turning on and off -- it was like the watch was having a hysterical fit. Then I noticed some screen blankness (half the screen blanks out), which comes and goes when the watch is in clock mode. Yesterday, the start/stop button stopped responding, which is a disaster, because I can't really give the watch any commands. I have done a factory reset of the watch, which left it fairly good for a while (except the GPS was still way out, or just not turning on), but now it is fairly bad. I've let it power down, and I'm going to try a reset again. This is a radical breakdown for no reason. Any suggestions? Garmin, can you help me?