First of all thanks to all for replies re I.Ex. lost not yet sorted.

As Win7 is or will not be supported by MS I may upgrade to Win10 regretfully.
Should I do a full backup of data or just do an update with a fresh FSX installation.
What do you recommend.

Also can Win10 Desktop be made to look like Win7 for me a more pleasant and logical display compared to Win10 I notice