I'm kinda perplexed by that new FAQ. I'm not sure that's the most common cause. While it may be a cause with a really old video card, I would blame it on TurboTax developers/programming before I'd blame hardware. I bet most of these folks are not having such problems with other software activations/purchases.
Many of these folks who are having activation screen problems are using new laptops with new video cards/drivers, and the newer laptops have high-resolution screens, which TurboTax appears to not be well-prepared for.
Most folks can resolve it with the scaling/resolution suggestions I mentioned above.
