MW2 will not launch from COD home - yes, i read the Read Me

I read the Read Me first Call of Duty post, but im running out of options as the Activision support forum for this is the worst. Hoping someone might have an idea for me to try as I am not computer savvy. So the MW2 portion of my game will not launch now. I had never had this problem before, but tried starting up yesterday and it was a no go. It shows “Playing Now” on Battlenet, but nothing on my screen. I can play BO6 fine, but i click MW2 and it does nothing. I have uninstalled and deleted all files and reinstalled fresh. I even went as far as trying Steam and it does the same EXACT problem. So it has to be related but i dont know where to look or try. Suggestion or another place to look would be appreciated.