-----ENV-------
os:win7 x64
vscode:1.14.2
hot key Ctrl+Alt+N don't work.
when i press Ctrl+Alt+N, the top of vscode will show:

And the right-hand button shows :

@skyhiter Could you disable all other extension and try again? One of the extensions would have the keyboard binding conflict with Code Runner.
Go to File > Preferences > Keyboard Shortcuts, you will see

thank u very much~
the extension "Advanced New File" also has this hot key for "newFile.createNewFile".
now, i have changed "Advanced New File" extension to "Shift+Alt+N"
Most helpful comment
@skyhiter Could you disable all other extension and try again? One of the extensions would have the keyboard binding conflict with Code Runner.
Go to

File>Preferences>Keyboard Shortcuts, you will see