My minecraft is not working anymore why? I do not know I've already tried to delete and install but it does not work
Latest 64-bit version of Java installed?
Graphics driver currently?
Delete mycraft folder (save savegames before)
played around on the starting arguments in the profile?
Press Windows + R and type in% appdata% and confirm with Enter. There you will find the .minecraft folder, which you must delete. Now you have a clean Minecraft without Texturepacks / Mods and can restart the game quite normally.
I have Mac xD
Right, now I notice, but the way should be similar. You can certainly execute commands on the Mac somewhere.
I'm assuming that your problem still exists, one possibility is probably that you completely reinstall Minecraft, and Solid has described it, an alternative would be to load the Crashreport in https://pastebin.com and send it in here, there are more accurate error messages it.
How to find the Minecraft folder is described here: