I finally got mine sorted
I initially installed a driver for a Sharp Network printer at a client
MX_D54_PCL6_PS_2103a_English_64bit
Also installed a Canon printer driver just after that
and since then, couldn't print
Spent a few hours with Microsoft online to see if they could find it but they only did the normal checking and all was as it should be
Eventually made some time to delete everything to do with Sharp and Canon, ie printers, drivers and then folders (under Program Files) as well.
It seems to work now so fingers crossed it stays working..
I do have another Canon printer to reinstall but will give it a few days, maybe months??
Gerry