I think it's antivirus because Antivirus means to protect your computer from a deadly virus
Unless you share the backup HD only the local user is going to see it. Given that it's a server, it's not a problem. You can also hide the backup with attributes +h +s and many other ways.
Explanation:
I think that you might have used it a lot or its just a glitch and will come back after some time.
It might be that your screen cracked.
But try re-booting if that does not work, wait and take off the battery.
Answer:
the tester
Explanation:
When a video game is playable the first audience to test these prototypes are the tester, these people have to test all the game, and they have say all the information about errors, issues, bugs, and any difficulty to resolve these problems in a final video game's version, in this way the complete game arrives to the final audience.
