PLEASE help me my volcano box suddendly not connected to box

PLEASE help me my volcano box suddendly not connected to box

PLEASE help me my volcano box suddenly not connected to box it was happend me on weekend my volcano box is not connected to pc it says like
Volcano box not found please connect the box and run the software again . i have change pc com and everything but it is dected as a com port on pc but software not running thanks in advanced pls help me