The hardware seems to support it, since all S7 use Ivy Bridge CPUs with an iGPU supporting Intel InTru 3D (HDMI 1.4 3D). You probably need a special player like CyberLink; the latest Intel graphics drivers; and 3D glasses compatible with the 3D method of your projector. If you have an Nvidia card in there as well, there could be complications due to the Optimus tech and having both the Intel and Nvidia graphics stacks installed, so you may have to force your media playing application to run on the Intel chip (or the Nvidia chip if you already tried that). But you didn't specify which exact model of the S7 you have, so I have no idea what kind of hardware you actually have; there are tons of different models of the S7 with different capabilities.
Also make sure you have stereoscopic enabled in the control panel under display.