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52" LCD HD TV circa 2011 - HDMI connectivity issues

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So I have a 52" LCD HDTV from 2011 here is the model number:

 

LN52B750U1FXZA

 

It's having problems connecting up with our new Lenovo workstation laptops. It will work for plugging in the first time with a laptop but after that I have to unplug and plug back in the HDMI cord on the back of the TV (which is a pain to get to). I'm thinking that it is a software upgrade issue simply because we've never done it. What software should I load on a USB to update it with?

 

Help????

 

Josh

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