Game keeps crashing, HC character died and new char just crashed too!

I lost a lvl 51 today. Whatever, I’ll get over it, but my new character just crashed in the same way! I really love playing Diablo games as hardcore, I played through all of Diablo 2 and its expansion this way as a barbarian and felt a ton of pride and accomplishment when I killed Baal. As my lvl 51 I was in Hell so I thought maybe the sheer amount of activity had something to do with it. But now I’m just in the first dungeon with the chinese girl you help find her mother who is with Lilith, which is not a very intense area, and I got the same crash when I hit the inventory key to look at a new gear piece that dropped. The music keeps playing, but the game is frozen and the only way out is ctrl alt delete, not even alt+f4 works.