Thanks for trying! It looks as though it is probably a driver issue and I will pursue that.

System slightly different. Security and maintenance is in Action centre but can't find Reliability monitor.
OK found it but different and no info'

There is no extension on the error code in my history file

Hi philc43,
Thanks for prompt reply. Have checked history and I see it failed with error C1900101. Searching Microsoft portal for help on this but haven't found anything yet!

I upgraded to Windows 10 from 8.1 on my Sony vaio laptop. It downloaded OK then started installation which took an hour or so and then I got my startup window with no message of any kind. The Home...