Macbook Air (mid 2012) Thunderbolt to HDMI Stopped working

Hey Guys,
I have searched this issue and have found several threads some 50+ pages long but I could not find a soluition. I currently have a macbook air 13" mid 2012 model.
Problem: I was using a thunderbolt to HDMI cable to watch movies on my SONY Bravia tv and it was working fine one day and after I updated my software to mac OS X 10.7.5 it stopped working. All i get on my TV is "no signal" and the screen on my MBA starts to flash blue every now and then.
I took it into the genius bar and they plugged it in to their system and it seemed to work, so the guy said to get a new cord.
I ordered a new cord and tried it at home and its still not working. After searching the forums I see that alot of others seem to be having the same issues and I am pretty sure its related to a software issue seen in the thread below.
https://discussions.apple.com/thread/3196192?start=75&tstart=0
Anyone have a similar issue and found a fix??

A new Mac is in warranty for 1 year from the date of purchase. Why not use it?
You may have to take the computer to the Apple store to have it checked out.
All hardware related issues should be brought to the attention of Apple.

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gerpet wrote:
The interesting thing is, i already downloaded iPhoto app on my iPhone 5 last year. after a log in with my apple id on my macbook, can't find it.
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