Macbook Pro no longer connects to Samsung TV thru HDMI

So my 13" MacBook Pro and Samsung HDTV i got back in feburaury were working perfectly together thru HDMI cable to a Dynex Mini DisplayPort, then all of a sudden they stopped. Now whenever I plug the two in together the MacBook turns blue ( as it did before) for only a short period of time and disappears, while the Samsung does nothing and continues to display "No Signal." I've been looking for answers everywhere from the web to my TV manual and even updated my computer, any ideas???? HELP!

Hi Sean,
The setting may have gone back to default after updating. Go to System Preferences > Sound > Output > select HDMI.

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My macbook pro no longer connects to my tv through HDMI my computer screen flashes blue but my tv does nothing! could someone please help!!

HI i was just wondering if anyone could help me!!
i have a macbook pro and i have connected it many times to my toshiba tv through my HDMI cable, and for some reason now when i plug it into my laptop the screen flashes blue on my laptop but nothing happens to the tv it just says no signal and i dont know what to do!!
if anyone could help that would be fab!!
pretty pretty please!!

Hello ,
Thanks for using Apple Support Communities.
Please follow the steps below to troubleshoot having no display on the external display.
No video or no signal, image distortion, "snow," or flickering
Check connections
When using an external display be sure to check the following:
If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
Monitor and Display Adapter Table
About Mini DisplayPort to HDMI adapters
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ)
Thunderbolt ports and displays: Frequently asked questions (FAQ)
Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
Try unplugging the video adapter or cable and then plug it back in.
If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.
Reset the resolution
Start by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
Start up in Safe Mode.
From the Apple () menu, choose System Preferences.
Choose Displays from the View menu to open the preferences pane.
Select any resolution and refresh rate that your display supports.
Restart your computer.
Apple computers: Troubleshooting issues with video on internal or external displays
Take care,
Alex H.

My macbook pro no longer connects to my TV with the mini dvi to hdmi adapter. A while ago the computer fell down and hit the cable. How can I tell if the computer is working ok. Doesn't show mirroring any more.

My macbook pro no longer connects to my TV with the mini dvi to hdmi adapter. A while ago the computer fell down and hit the cable. How can I tell if the computer is working ok. Doesn't show mirroring any more. Was working while watching a movie but when I pulled it out from the computer and put it back in the system would no longer mirrorr the screen on the TV.

The best option is an appointment at an Apple store genius bar. The evaluation will be for FREE!
Ciao.

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Sorry, that should read that i can't get into the display preferences.

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Wi-Fi Problems in OS X Yosemite (3)
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Essentially, I'm attempting to connect the DVI (NOT Mini-DVI) output on my MacBook Pro 2,2 to the HDMI port (labelled HDMI2/DVI) input on my Samsung TV using this cable: http://tinyurl.com/37cfcum
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Ted,
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I have have my macbook pro hooked up to my Samsung tv via HDMI. I have great video but no audio from TV. Only what is coming out of my computer,
Never mind, I lreferenced some other posts with the solution. Thanks anyway!

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My Macbook Pro will no longer connect to my tv via HDMI

Well basically it is in the title, my Macbook Pro will no longer connect to my tv via HDMI.
I have been using this cable for a long time and works perfectly.
earlier today i used it to connect my mac up to my parents 4k tv, it worked fine, did what i wanted to do.
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I've already tried
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turning tv on and off
different hdmi ports
thank you

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Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM
Try another cable

Hellow everybody ok! i dont speak english well but just i want to know what is the best resolution to connect my macbook pro to mi led 55" samsung tv

hellow everybody ok! i dont speak english well but just i want to know what is the best resolution to connect my macbook pro to mi led 55" samsung tv

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HI,
MacBook Pro Mac OS X (10.5.8)
You posted in the Safari forum. Try posting in the Leopard or MacBookPro forum instead.
MacBookPro Forum
Leopard Forum
Did you free up disk space? http://discussions.apple.com/message.jspa?messageID=12132180#12132180
Carolyn

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Hey Brittany,
Welcome to Apple Support Communities.
It sounds like you’ve done quite a bit of troubleshooting to try and resolve the issue with your MacBook Pro not connecting to your Wi-Fi network. If you haven’t already, take a look at the article linked below which provides some additional troubleshooting suggestions that may help you resolve the issue.
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So long,
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Macbook Pro no longer connects to Samsung TV thru HDMI

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