So I'm using Rubidium 0.6.2a and Forge 43.2.0 but this also happens with any version of the game, forge and mod I've tried.
Basically my game stops working at the mojang loading screen while initiating it. The only mod installed is rubidium and I've tried deleting the config folder, and the options.txt and optionsof.txt files in the .minecraft folder. I've also tried making a new .minecraft folder and uninstalling the game and launcher (the official launcher) and trying with GD launcher but it didn't work either.
Any ideas on how to solve this?
By the way, I've used rubidium before, and this is not the first time rubidium stops working for me (the last time it was solved by changing my hard disk for a new one).