Amongst your most important assets are of course your embroidery designs and any artwork files you may use. These can potentially be saved anywhere on your system. By default however...
Any designs, cutting files, or machine files that you save from Hatch Embroidery will be saved by default to the My Embroidery folder at the location...
C:\Users\<USER>\My Embroidery\
If you save to a different location, MS Windows® will continue saving to that location until you change it again.
Similarly, any artwork you save from Hatch Embroidery will be saved by default to the My Pictures folder at the location...
C:\Users\<USER>\Pictures\My Pictures\
Note: Whenever you install updates or upgrades to your existing software, the above folders will be preserved. However, if you install your software to another PC, you will need to manually copy the contents of the My Embroidery and My Pictures folders to the new location.