Minecraft Crashes along with I can't see premiums skins

My Minecraft started crashing, even though I reinstalled it many times already. It crashes in all versions, using forge, optifine and just the normal ones. It crashes after MOJANG window appears and whenever I join a Multiplayer Server. I have to open Task Manager to end task 2 minecraft section there (I don't why it's two when I opened 1) in Background Processes. After ending the task it responds again. I don't why it's happening it wasn't like that before.

Note that:
I reinstalled Minecraft
Updated Java
Updated my NVIDIA GEFORCE GTX 950M as well.
I'm using Windows 10. (I also updated it)

Along side with this problem, somehow I'm a premium user, and I can't see my skin and other skins. Went to premium servers and everyone is a Steve and an Alex. I asked friends if they can see my skin, they said yes. This happened yesterday 05/20/2017