I had read a bit about that in some previous news stories but in my case, the computer is almost always on unless I go out of town and actually power it down. That being said even when your computer is turned off but plugged in there is a small amount of power within the system.
It's the same for the T800 unit in The Terminator 2. He gets crushed and ends up with a big metal shaft stabbed through his torso. He shuts down but then gets a small amount of residual power from the machines in the steel mill and is able to reroute his energy supply and wake back up and finish off the other Terminator T1000!
You see? No long term data loss occurred!
https://www.youtube.com/watch?v=mCL55ULqo6A