First of all, hold Windows key and press "e" key to open Windows Explorer.
Secondly, to refresh view, you press F5 key (as I said before), not F8 key.
Then, when you go to View tab, you have to change TWO settings:
- Under the Hidden files and folders section select the radio button labeled Show hidden files and folders.
- Remove the checkmark from the checkbox labeled Hide protected operating system files.
Now, press F5 key, or restart Windows Explorer.