Adding to the chorus - I've just done a fresh build and my NUC is again showing this memory error. As with people above, it manifests when I have a full screen program running (XBMC in my case) and I switch the inputs on my TV so that the TV is no longer showing video from the NUC. This error comes up whether I have the NUC hibernate, go to sleep, or let it stay running. I have two NUCs, they both do the same thing. I am running windows 8.1 64bit with all updates, the latest NUC driver bundle, the latest bios, and only have XBMC and Avast running on a machine with 16GB of ram (yes, its overbuilt). As with others, the connection is via HDMI and is reproducible whether I am connected through my switching receiver to the TV, or if I connect directly to the TV. It is frustrating that this problem has persisted for over a year. For what its worth, post 14 masks but does not resolve the problem but at least prevents me from having to deal with the error box every time I try and watch XMBC.
please fix... this is an embarrassing problem for a device with this intended use case.