Graphics stuff not able to auth key any more

[Robo Dude]

So I tried watching Shaun of the dead on my computer and completly messed it up.
Now I cant play Blockland without being on 8 bit and Im gettubg 90x the lag. My key file is now a media file what do I do.

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[Robo Dude]

never mid system restore fixxed it turns out I had a 5 trojans