How to recover data from a Nexus 6 that won't start up?

[AC Question]

My N6 died on me. When switching on there's Andy with the red triangle and the message 'No command'.

Or the message:
'Your device is corrupt. It can't be trusted and may not work properly.'

Visit this link on another device:
g.co/ABH

I just want to retrieve important data form this phone.
Can some one help me? Please!!!

Eric

 

[belodion]

What happens if, from the No Command screen, you hold Power and press Vol Up once?