A and B greyed indicates you have a connection error... most commonly it's a problem with cabling that causes this. (that's touched upon in the various BUDS videos). Are you using a Y-cable?
PS: if the videos are blurry it usually means your internet connection is very poor, and your video player is not getting sufficient bitrate to display them. And as Bill mentioned above, sometimes 'BUDS' problems are simply the ECU not powered up correctly...
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