Overall I'm pleased as my laptop a Sony Vaio with intel i.5-2410M CPU @ 2.30GHz and a 64 bit operating system is running faster. I did a clean reinstall of Windows 10 a few weeks previously so I would not be cloning any registry bugs to the new drive.
However whenever I try to do a custom scan of a file or folder most the folders and files are not showing up in the 'select folder dialogue' box. The folders are showing up in my documents but when I click on a folder the files are not there. Strangely the only folder showing in the downloads folder is Samsung Installer - my other downloads do not appear though they are visible in Windows Explorer.
In Windows Explorer all the files/folders are as they were. I have tried various fixes such as rebuilding my index and selecting 'show hidden files/folders'. No difference. The drive condition is showing as 'good' in Samsung Magician.