My 'Documents' folder looks like this, with 'Local Disk' towards the bottom on the left-hand side.
An alternative route, if you've got a shortcut to 'This PC' somewhere, is to double-click that shortcut and then either single-click 'Local Disk' in the left-hand column or double-click it in the main pane.
If you've not got a shortcut to 'This PC', start typing 'this pc' in the Windows search box. When 'This PC' appears above it, click there and then single or double-click as in my previous paragraph.
After that, follow the final paragraph from my post at 1729.