I think I finally found cause of problem, although solution may be harder to find.

If it is memory problem, despite having heaps of RAM, especially on my new PC… how about I look at Task Manager.

And there is Trend Micro, consuming high % of memory (and high % disk space, despite having heaps of disk space), so I disabled TM, and Word prints fine.

That explains why Word didn't print even on a new PC... because I installed TM soon after buying PC.

Word is also now fast loading docs, and PgDn is quicker, and quick to even process a Print (before when I click Print, it would be slow to process, with a “not responding” message, before the error message).

So now I have to investigate TM problem…. Eg is it a bug, will TM admit to one etc.

Thanks, Sid