There are some physical factors which lead to external hard drive failure, such as dust, fire, power fluctuation, etc. First, check whether USB cable is properly connected or not. Here, I have listed out some simple techniques which could help you in extending external hard drive life span.Ĭaution-When hard drive stops working, don’t come to conclusion that it is failed. Really scary right? If so, then take a little care of your external hard drive and keep it away from failure. “External hard drive suddenly stopped working” the line itself is so scary which reminds me about lots of data stored on my external hard drive.