Macbook Pro - Retina not recognizing HDMI

My third external monitor has a VGA and DVI port. I have a hdmi (computer) to dvi (monitor) cable that connects flawlessly on my old lenovo. Why might my new MBP - Retina not be registering or recognizing my third external via hdmi (it doesn't recognize alone either)?.
Thanks!
Chris

Just wondering if you ever found a solution. My mbp retina is not finding my iLok 1. No green light. Max 5 won't authorize.

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I'm having some odd troubles with my Macbook Pro that I haven't had before.
I have an iLok that's not being recognized by the computer so I can't start up Pro Tools; however, when I tested the iLok on my sister's Macbook Air, it was recognized fine on iLok.com's tests (that also proved not to work with my Macbook).
I also have an Anker 4 port USB hub (not external-powered) that was running my Intellimouse by Microsoft perfectly fine until I shut down my computer last night and turned it on this morning to try it out.
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Just wondering if you ever found a solution. My mbp retina is not finding my iLok 1. No green light. Max 5 won't authorize.

Macbook pro Retina not recognizing my Apple TV 2nd generation

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I have the exact same problem. I can send to speakers and I can send videos to my apple tv2 (YES!!!!! LATEST EVERYTHING!!! SHEESH) It's a retina macbook pro.
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I have a Mac Book Pro Retina that will not work using the HDMI port. I have tried with two Monitors and difference cable and the issue happens on both. I connected one via a Display Port to VGA and it works fine.
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Hi walkerheather,
It sounds like you've already done most of the pertinent steps here:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
I would recommend going through once and trying anything you may have missed in the section "No video or no signal, image distortion, 'snow,' or flickering" and then follow these steps from the very bottom:
If you tried all of these steps for your display and the video issues persist, contact Apple technical support or take your Apple computer to the nearest Apple Store or Apple Authorized Service Provider (AASP) for diagnosis. If you plan to visit an Apple Retail Store, make a reservation at the Genius Bar using http://www.apple.com/retail/geniusbar/ (available in some countries only).
Note: Diagnostic fees may apply for issues not covered under warranty or the AppleCare Protection Plan (APP).
Take care,
- Ari

My MacBook Pro is not recognizing my external hard drive. The hard drive is listed in disk utilities but an icon does not pop up and I cannot access the data. Is there any way to resolve this?

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WE know Disk Warrior is more reliable, hence more useful, and should be in any disk mechanics toolchest.
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Please don't post screenshots of log messages—post the text.
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You did it! I'm happy for you and you're welcome.
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Macbook Pro - Retina not recognizing HDMI

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