Organizing bookmarks in Safari for Windows
If you go into preferences, you should be able to tell safari which bookmarks folder to use for the Favorites Bar.
I don't have a PC, but on Mac this setting is under General in Safari.
After going to each website, the black boxes should go away, and be replaced by screenshots of the website.


Go into Safari Settings.
There is an item called Favorites Bar.
You should be able to change the Fav Bar folder to the on you imported from Chrome.