I have a seagate 1 TB external portable HDD which all of a sudden stopped working one day. If I connect it, it doesn't show in my computer or Disk management, but i get a usb device icon in taskbar. Device manager doesn't show any storage device but USB ports has a storage device connected which if I try to uninstall drivers the Device manager hangs. If I boot with the drive connected windows doesn't load and system stalls with a black screen. The same for different USB ports and multiple pcs/laptops.
What could be the problem? Thanks in advance! Tried only on windows 7.