According to this article, it sounds like the facility was closed in 2012. http://www.twincities.com/2016/10/07/remnants-of-northwest-airlines-pilot-training-center-up-for-grabs/ Whether or not all the computers were still in use at that time is tough to say, but I was surprised at how clean and orderly most of the equipment was that was left.
I would figure the data center rooms and stuff might of had other racks of more modern server equipment that might have been sold off separately or relocated to other sites. Didn't see holes in the floor for cabling but wouldn't be surprised. I didn't see video projection hardware on the auction and usually that is used to project the stuff outside the cockpits no?
What was left is the interesting stuff :-) -- Ethan O'Toole
