Hello there,
Minecraft version:1.12.2
Forge version:forge-1.12.2-14.23.5.2847-installer-win (i don't understand how to install the versions without the win installer, sorry)
Operating System: Windows 8.1 (amd64) version 6.3
Java Version: 1.8.0_51
It's pure forge, no mods.
I know that I have an openGL error but I don't know how to fix it. (I don't really understand what openGL does). Optifine (wich is not installed) says "OpenGL error : 1280 Invalid ennum", I don' know if it's related.
I hope I don't get bannished for doing something wrong.