Minecraft keeps crashing what can I try?

My Minecraft always crashes since yesterday, so on the last third at the Mojang loading screen, the program stops responding. I've already reinstalled, repaired, logged in, deleted from the% appdata% folder, reinstalled Java, updated Windows. I have no Tekture pack and no mods in Minecraft that the driver is out of date either

Try allocating more RAM to Minecraft.

I solved the problem but thanks.