My computer is functional again! I took it to a friend for a second opinion and after a quick test he said the problem was with the power supply, not the motherboard, and thus very easily fixed.
Now I have to upload some photos.
We saw the Met Opera's HD broadcast of Dr. Atomic today. It was really cool, and the singing was amazing. I did get a bit antsy in the second act, but that might have been more because after knitting 15 rounds of the Hourglass Sweater body I finally realized I had twisted my cast-on row before joining the ends, and that I would have to frog the whole damn thing for the second time (the first time was after admitting my gauge was all wrong).