Crashing

My Minecraft keeps crashing for no reason. My PC should run Minecraft perfectly. It opens, but after I press either multiplayer or singleplayer and, for singleplayer, if i make a world and open it, it crashes instantly. It turns whitish and says "Minecraft not responding". No matter how much time I let it try to "solve" the problem, it just doesn't work. If I try to close it, I get the message that Minecraft crashed. On multiplayer, after I pick any server, it just instantly crashes, the same as it does on singleplayer. I tried updating my Java version, tried every version of minecraft but nothing worked. I can't seem to find anyone else with the same problem. Please fix this!