See Navigation buttons like back, home, bookmarks and reload are missing.

Can't see the Menu Bar (File, Edit, View, History...Help)? Hold down the key ( key in OSX) and press the following letters in this exact order: V T M The Menu Bar should now be displayed permanently, unless you turn it off again (View > Toolbars). Turning the Menu Bar on and off is a new feature in version 3.6. See other bars under View > Toolbars. Click on one of them will place a check mark (display) or remove the check mark (not displayed). To display the Status Bar, View, then click Status bar to place a check mark (display) or remove the check mark (not displayed).

• If items are missing then see if you can find them in the View > Toolbars > Customize window.
• If you see the item in the Customize window then drag it back from the Customize window to the Navigation toolbar.
• If you do not see that item then click the Restore Default Set button in the View > Toolbars > Customize window.

Press the alt key then up at the top press view, then press toolbars and click navigation toolbar.