No start menu, no icons, no "theme", nothing. Now, If I open Task Manager and stop the explorer.exe process, and then run a new task and run the C Windows\explorer.exe, i start menu, icons - the theme ...

To bring it up, just type IEDiagCMD.exe in start search and hit Enter. When you execute IEDiagCMD.exe you will see a black window that stays open for few seconds and then closes by generating a cab ...