It should be mentioned that in the past the University of Princeton had successfully extracted encryption keys from a cold booted computer after the PC has been

It should be mentioned that in the past the University of Princeton had successfully extracted encryption keys from a cold booted computer after the PC has been completely turned off. They even demonstrate what they had recovered and how many bits has been lost. Check this page and videos: https://citp.princeton.edu/research/memory/ https://citp.princeton.edu/research/memory/ https://citp.princeton.edu/research/memory/media/ https://citp.princeton.edu/research/memory/media/