Minecraft 1.8.4 or any above will not open. Its weird because 1.8.3 and under will?

One day I accidentally opened a mod world in vanilla Minecraft. I do have forge, but I forgot to use it. So basically it was just super laggy, and if I press tab I had 0 Wi-Fi bars. Then finally it crashed. I tried to reopen 1.8.4 because I hadn't realized I forgot to open forge yet. But when I tried to open 1.8.4, the launcher would just disappear, and Minecraft would not open. Later, I tried opening 1.8.3. It worked. So I tried a lot of the older versions as well. They all worked. And when 1.8.5-1.8.7 came out, I got very excited. So I tried opening 1.8.5. It crashed the same way it did for 1.8.4. Same with 1.8.6 and 1.8.7. I was very disappointed. Ever since, I have been stuck playing on 1.8.3. Any ways I can fix this?