Green light won't stop blinking; blue light never comes on

So I attempted to run the full diagnostic test, but after a couple of hours it returned the “Connection lost” error code (my Internet went out during it). Weirdly, though, the instant I started the test the light stopped blinking and went steadily green. Now the drive seems to be behaving normally, and the blue light had reappeared. We’ll see how long it lasts…