how to fix a Seagate portable hard drive that doesnt appear in device manager, disk management or my computer

Kanoj456

Honorable
Nov 27, 2013
2
0
10,510
I have a Seagate portable hard drive which does not read on any computer i have tried. I have tried looking both in the device manager and disk management and it does not appear. The last time i used this hard drive the computer crashed. Does this have an effect on this problem? And if so how do I fix it?