Can't close Photoshop 2021 due to program error on Windows

I went on photoshop today and I was stuck on the "Welcome to photoshop" screen, when I try to do anything a popup comes up saying "could not complete your request because of a program error", I have been searching to find a solution and I did, I turned off "use graphics processor" and it worked fine until I went to close and the file closed but now I can't close the welcome screen, it doesn't appear in task manager either so I can't force close it. I am using the latest update though it was not working before updating. any help would be appreciated

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