Complete test not supered

In August , I bought an external WD Mybook for MAC.
For a week all right, then suddenly, when the MAC turned on, the WD did not appear. Not even activating from WD utility.
After a few days, I do not know why, it has reappeared.
Apparently everything works fine, reads and writes.
But by doing WD Drive Utilities, CHECK OK, QUICK TEST IK, TEST COMPLETE: COMPLETE TEST DELL? UNIT NOT SUPERED.

What should I do?

Hello adriano2,

Maybe you should try contacting WD’s Technical Support about this.

To Contact WD for Technical Support