So I started up my laptop today and was greeted with the following message (not a direct quote):

The type of the AC adapter cannot be determined. This may interfere with your 
computer's performance. Try unplugging the AC adapter and then plugging it 
back in, thanks.

The problem was that I hadn't fully secured the plug into the back of the computer. However, I was a little taken aback when a message from BIOS said, "thanks."

Is this normal? Any chance the message was illegitimate (virus)?