I do not think it was tiredness, I think I was sick...

It dawned upon me, around 24 hours ago, that the malaise that affected me yesterday, which ranged from an all-around feeling of tiredness to an avoidance of hardware problem-solving ("Yeah, so it doesn't work. So what?") was very likely the result of illness and not overexertion, so I dosed myself with a gram of C and went to sleep, hoping for the best.

I woke up feeling like new, almost.

At least I was able, over the course of the day, to address some of the more pressing hardware issues.

And that's always a win!