This seemingly related question isn't relevant, as it concerns a replaced screen, and this question involves an intermittent problem.
My tablet suddenly stopped responding to touch. I haven't dropped it or otherwise damaged it. It does respond to a USB keyboard, although it is extremely inconvenient to do so. I factory rest it, but he problem persists.
It's a no-name, and not worth having it repaired. Can anyone think of any software options which might get it working again?