This is the first VR disk in the basement.
As I recall, when you start the area it is in, there is a rotation and power switch in front of you. Hit the rotation one 3 times then power it. Follow that path to the left and you will find the VR disk in a box with one sentry guarding it. Almost went the right hand path and skipped this one - the box on the far right side is a blueprint (Health 2 as I recall).