I finally decided to buy myself a new computer after getting the green light from Joanna. All the parts but the hard drive arrived. After some missteps and issues running the system preparation software, I managed to pull the hard drive from my old computer and move it to the new computer.
It seemed to work great, other than the screen being rather pink. After updating all the drivers to no effect, I unplugged the monitor cable and plugged it in again. Everything worked like a charm.
I'm running into a few issues, though I'm not sure if it's due to the new computer or my enthusiastic changing of game settings to max. I may take things down a notch and try again.