Hi Rich 912, Many thanks for your prompt reply. I have checked that the touch screen is enabled and have re-installed the driver. It informed me that no changes were made as I had all of the latest drivers installed. So, unfortunately, still not working. Any other thoughts?
You could try disabling the touch screen, shut down, reboot and then re-enable. Also, if this problem only happened recently you could try a system restore to a prior date when you know that the touch screen was working. If this resolves the issue then be very careful about which Microsoft updates you allow.