Need Help! Missing Textures while using Frost or Meteor God Powers and many more Graphics Glitches!

Hello Guys :) I am experiencing some weird Graphics Glitches in AOM EE while using Meteor God Power. I am showing this in Editor, but this also happens in Cutscenes, Random Maps, Online everywhere. I have got the game right from Steam, so I don't think there is something wrong with the game. Its some sort of Transparent overlaying texture I guess. If anyone has a suggestion on how I can Fix this, or has witnessed this problem please let me know. And also I am getting Black colored shading in some effects, but I think this is all related to only one problem. PLEASE HELP :( I have attached screenshots.

Screenshots : https://drive.google.com/open?id=1hD31TLcFWZN4M5kd8rTmmzoekFPVCbmy https://drive.google.com/open?id=1rW66x-YOm3Ztm5xoze9-z4M90O63zpS1 https://drive.google.com/open?id=1kLSZu6M-T1N0a00RJP_b352orhAga7tQ