USB external drive doesnt work

My USB external HDD isnot displayed,but computer registers it.

WD says:

Test Option: QUICK TEST
Model Number: ST1000LM024 HN-M101MBB
Unit Serial Number: [Deleted - Privacy]
Firmware Number: 2AR10002
Capacity: 1000.20 GB
SMART Status: PASS
Test Result: FAIL
Test Error Code: 06-Quick Test on drive 2 did not complete! Status code = 07 (Failed read test element), Failure Checkpoint = 00 (Unknown Test) SMART self-test did not complete on drive 2!
Test Time: 19:33:48, June 30, 2015

Test Option: EXTENDED TEST
Model Number: ST1000LM024 HN-M101MBB
Unit Serial Number: [Deleted - Privacy]
Firmware Number: 2AR10002
Capacity: 1000.20 GB
SMART Status: PASS
Test Result: FAIL
Test Error Code: 08-Too many bad sectors detected.
Test Time: 19:43:09, June 30, 2015

please advice, can i save data?  Thx.

 Welcome to the WD Community.

Those results are for a samsung drive. 

We don’t have many information about third party drives. 

As far as I can see, that unit is experiencing a bad sectors issue.