I have two G75VW-DS73-3D, both purchased in 2012, alas mine died a couple years ago but my daughter's is still fully functional. We both used the 3D glasses to watch 3D bluray movies.
My G75VW needed a motherboard replacement. I went through several online purchases. Every time a replacement came to the door, I hoped it would be the right one. Every time the board was a non-3D board. Sellers would remove labels and present their boards as the 3D model (even manufacturer green stickers). I wasted about six months trying to find a good motherboard. It never happened. I finally gave up and tried to have my original motherboard repaired. That didn't work either. I finally gave up and bought a replacement ASUS laptop.
I saw a number of motherboards, no replacement boards had that damned emitter connection that my 3D board had, they were all 2D models. That emitter connection supplies a signal to the 3D Vision IR port next to the camera at the top of the display and is required for use with the 3D glasses. I had a couple boards that had the larger display connector but not the emitter connection but most had the smaller display connector. Guess what, they all had the correct motherboard part number on ASUS manufacturer stickers. With the 3D part number, sellers could charge premium prices, and I paid them. I returned every board and got my money back, except shipping costs. I think I dumped $250 in shipping cost but I never tracked down a working 3D motherboard. This all happened in late 2016.
Now I'm not saying you won't find a good 3D motherboard. Don't get hung-up on the stickers, like I've stated, all my replacement motherboards had the correct part number sticker but they were all different boards. Money talks. I had pictures of all my replacement motherboards (to communicate with the sellers) but I just checked my cell phone and icloud account, they are all gone.
I don't remember any 3D software requirements. The 3D function was hardware. If you have a post screen, your system should work but the 3D will not function.
Personally, though, I would start over with another laptop. I feel for you, my heart was flattened when I went through what you are trying to do.
Good Luck
G752VSK, G75VW-3D, G51J, G1S
Homebuilt Windows Server