After i became a Knight in the Brotherhood of Steel i cant draw my weapon, shoot , nothing. i can use stims but thats about it. I've seen peope say a fix is to talk to Nick and finish the Reunion quests but i finished that before hand. really annoying bug as my only uncorrupted save is about 10 hours back.

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Having the exact same issue. Even after multiple reloads, bug still occurs. Weapons are selectable, but nothing happens - no onscreen weapon shown, trigger pull does nothing. VATS is also busted, will not pull up. The enemies still have working weapons however.

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Bump. Also, I read something today closely resembling this problem. The person stated that they sat in a chair, and the problem fixed itself. Going to try that after work.