Vostro 5620 Wi-Fi not working after driver update.

Vostro 5620 is not working after driver update. This morning my wi-fi button on the dock is not present where it typically is. My system did an update this morning at 8:21am. I have connected to my modem through ethernet in the meantime to update the drivers. After the update, the wi-fi is still not present. Please help!!