When I purchased Minecraft in June, everything was fine. After a couple of months of not playing it, it logged me out. When I try to sign in it would lag out like crazy and then freeze my computer, or would be stuck on the signing in screen. It would never go to the screen, it would always be stuck. It would stay like this until I held the power button for 5 seconds. After I unistalled it and re-installed it just went to a black screen. When I went to the settings app, to reset it it just goes back to to the normal screen. But when ever I try to sign in it would lag then freeze. Somebody please help.