has problem when mouse is removed.
brand of touchpad was found in hardware menus.
driver was downloaded.
current driver uninstalled.
new driver installed.
didn't work after many boots
post made above
prepared to drive image the working image back to the C drive
and it suddenly worked.
nobody else has the problem and nobody knows how to fix it apparently.
if you get lucky it fixes itself.
The wonders of computers to have a mind of their own unlike the DOS days where we had control of our deterministic computers