I did as you suggested replay and my video driver was rolled back to NVIDIA 6.14.11.6371 (it was 6.14.11.8634 after I updated a few weeks back). After it completed the roll-back, everything showed as large characters and I was asked to reboot. I reset the display size to 1600*900 - the value it was before the roll back and rebooted.
When the reboot completed, the display area was somewhat smaller - it lost a couple of inches each side and about 1+ inches at the top and bottom. The image size was proportionally reduced.
I could choose a higher resolution but the images were still smaller than I prefer.
Before I updated the driver a few weeks back, the display area occupied the whole screen with comfortable sized images. I'm not sure what to do now.
Troubled out west...