LoRa ESP 32 (v2) Board - stopped working

I have 2 LoRa ESP 32 (v2) Boards…

New Boards purchased 10days ago !

Board 1 has just stopped working - will not send/receive LoRa
Board 2 continues to work

Have installed the same ‘sketch’ on both ’ to test
‘HelTec Automation™ WIFI_LoRa_32 factory test code’

Board 1 - stops after the wifi networks found display
Board 2 - displays the ‘packets’ data screen

Any help/advise on getting Board1 to start working again