When loading in, I always get stuck when the mojang screen pops up. this has been going on for at least 3 weeks now and I dont know hoe to handle it.

Basically, I go into the launcher, and It gets all prepared, and then the Mojang screen pops up, then the loading bar gets stuck around 3/4 to the end, and a computer popup appears saying that the game is not responding. this has been going on for 3 weeks and I have no idea how to fix it, I have tried everything I can think of, and I hope this gets fixed.