In AutoCAD 2009, Autodesk introduced the ribbon interface to AutoCAD. The ribbon is their alternative to toolbars and pulldown menus.
To show your pulldown menus, type MENUBAR, then 1 at the command line.
In AutoCAD 2010 and later, our software displays a ribbon instead of toolbars by default. If you prefer toolbars, the easiest way to get them back is to use the Find Lost Toolbars command.
Ribbon: DM Electrical/HVAC/Plumbing->Utilities-> ->Find Lost Toolbars
Pulldown Menu: DM Electrical/HVAC/Plumbing->Utilities->Find Lost Toolbars
This will display all of our toolbars. Dock or move the ones you want to keep and close the ones that you do not.