Well, the machine has been fixed. Or rather, wasn't broken to begin with.
After a short trip in the snow (shocking, after a week of good weather, to get a sudden reminder it is still winter) to
Mr_Weasel and
Mindrobber's w/ the sacred beast, chip meister Charles cracked it open and asked "what's the problem, eh?"
And, lo, there was none. We backed up a bunch of files, just in case, but it turned out there was nothing amiss. The cable leading from the router to the computer had gone snarky, so I unplugged it and plugged the cable from the modem to the router to the computer.
Problem fixed.
Charles tried Counterstrike, and found it not to his liking. A shame, but not everyone likes everything.
So, all is back to normal. Tomorrow, I will (still) be sick with a working computer. Perhaps I will finish my Apocalypse review! And my Bow, Kiss or Shake Hands piece!