Lenovo Yoga 730 - no audio/ even internal speakers not recognized

Brand new machine.  Bought yesterday.  Inteal speakers not recognize.  No audio option options provided on settings screen.  Headphone jack gives no audio as well. Downloaded driver from Lenovo. Ran it.  Still has speaker in sys tray with red X and each time we try to troubleshoot, it just says restart.  Please help.  Otherwise, this goes right back to the store.