Lap Audio Alerts

Watch no longer providing audio alerts. Beeps and info provided on the screen but no verbal info. Got the watch on 31 January. Readouts for two weeks. Nothing since 14th when screen went blank after starting a run activity. I pressed lits of buttons which were still activating menus, but nothing on the screen. I have checked setting and all setting seem correct. Is there volume control some where (not music edition) Do i need to reset? If so, how do I do that? Will I lose info? Thanks