Harry thanks for your interest and it's a GeForce GT430. I originally selected driver 353.62 dated 29.July from their site as I'd seen this recommended somewhere, can't remember where. When that didn't work I went with increasing desperation through a series of later drivers waiting lengthy periods for restarts only to find no improvement. (Tried comprehensive uninstalls within the registry). Mostly Windows ignored the card (Code 43) and ran the basic graphics but sometimes I got massive conflicts with horrible distorted and cursor stuttering results. I'll "bounce back" in a week or two, after a period of reflective contemplation, and look into the application of KB3073930.
It's the time everything takes that makes it such a pain.
