Perhaps one of the most frequent complaints I receive regarding Windows 10 is that, after the update, users can’t find their files – their stuff. Take heart, the files should be right where you left them.
There have only been a few cases that I know of where users lost files and those were where the file or file space was corrupt at the time of the conversion.
So where is your stuff? First step is to give Windows a little time to catalog all your files by location. Windows uses a feature called the Indexer.