Solution #2: Scan External Hard Drive With Virus Cleaner/Anti-Virus Software If it does not help you to troubleshoot the external hard drive not working Seagate, then follow the next solution. You can also try to reboot the PC and retry to connect your hard drive once again. Or you can try another USB port to connect the drive to your PC. So, if you notice that external hard drive light is blinking but it is not getting read by the system, then you can try to connect the hard drive to another system and check if it is getting recognized. Sometimes, the USB port of your system does not work properly or the USB port itself is damaged. Solution #1: Connect External Hard Drive To Another PC or Mac
Watch this video guide to learn how to fix the “Seagate external hard drive not recognized” error in no time.
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Product description Seagate Backup Plus Slim USB 3.0 2TB External HDD Hard Drive