This is presumably because you cannot remember the password. All routers have a reset button which will reset to the factory defaults. Should tell you how to do this in the manual.
I have 3 att uverse cable boxes...1 being the dvr unit. The room with the dvr unit only shows a...
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I have 3 att uverse cable boxes...1 being the dvr unit. The room with the dvr unit only shows a black screen with live tv? When I go to watch a recorded show it works in the other rooms but is a black screen in the DVR tv