You may also try deleting your Profileoptions, and Profileoptions_options files in your Saves folder for DAI, in your users section. This would remove any changes to default settings(for the game) and let the computer remake when it boots up finally. This would help eliminate anything that would cause a starting issue because of a faulty setting or corrupted file. Also if you have any saves in this folder you may want to cut and paste them into a "backup saves" folder and see if a corrupted save maybe interfering....do this with Origins option of cloud saves turned off.
Another thing to try is to take origin offline and see if it makes a difference....
Another is to restart Origin and make sure it is updated....I have seen issues where origin wants to update and thus doesn't want to start games...DAI in particular...
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Edit to say:....Oh, and post the DiaX file per sticky instructions just in case it can reveal something you maybe overlooking.
