Mordekaiser Rework Troubles

As the new Mordekaiser hit live i have been encountering this on going problem with his ult. When ever i play against him and i get ulted by him in a team fight my game usually crashes or my pc force shut down. This also occurs when i play him and use my ult in a teamfight. Is there anyway that i can prevent this from happening? Or is there anyway that this problem can be fixed by any chance? I would love to get some feedback asap. Thank you.
Report as:
Offensive Spam Harassment Incorrect Board