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.

Similar Messages

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.

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.

My MacBook pro will not connect to the Internet through wifi yet all other devices do

My MacBook pro will not connect to the Internet through wifi. I have several other wifi enabled devices and they are all connected to the Internet just fine... What could/would cause this?

Disable your AirPort and enable in a second. Or check, maybe you need to type in correct digits in; Settings/Network/Advanced/Configure...

HT203196 My macbook air 13inch got shutdown 3 times by itself. I tried installing SMC package as suggested but my computer is telling the update is not required. Could you please help me on fixing this issue. Thanks.

My macbook air 13inch got shutdown 3 times by itself. I tried installing SMC package as suggested but my computer is telling the update is not required. Could you please help me on fixing this issue. Thanks.

What version of OS X are you using? Exactly which MBA model do you have?

HT4009 Unfortunately, I keep getting the error "can not connect to iTunes. Code:0" I've tried rebooting, signing out of my apple ID, can someone please help or advise me on what to do? Many thanks, Ryan

Unfortunately, I keep getting the error "can not connect to iTunes. Code:0" I've tried rebooting, signing out of my apple ID, can someone please help or advise me on what to do? Many thanks, Ryan

hi i had the same problem today when i updated my itunes to latest version. however, i have just found my songs in the 'itunes media' folder. this was accessed through 'my music' then keep clicking through until you find itunes media and all my library songs were in there and i then just added these files to my library and all were restored however, i have lost all my playlists but at least my 700 songs are back. very dissapointed with apple that they have let this happen with their latest update, the previous version was miles better than this one . hope you find them. stevo

Hi, I need someone to help me change the login screen. The computer I have is a macbook, its second hand and probably around 3-4 years old. The previous owner had the login screen has a lego or something. Could someone please help me change this??

Hi, I need someone to help me change the login screen. The computer I have is a macbook, its second hand and probably around 3-4 years old. The previous owner had the login screen has a lego or something. Could someone please help me change this??

computerilliterate52 wrote:
hi all, i hope someone is very computer litterate about java that is i have a dell 2400 pc windows xp 2, well since msn isnt downloading anymore java updates we all have to download a compatible one to our computer i use explorer and i can play www.iwin.com online games, yet when i go on to the msn browswer it wont load the games all i see is it just trying to load and load nothing said and nothing done. what could be wrong it works on ie and not msn browser? i have zone alarm, i have avg spyware tester and spyblaster, but i thought it may of kept me from downloading all this yet it worked on IE please help and i dont have flash player either it wont seem to work any and i mean any help is welcome.i tried to change the browser settings and did all that stuff i am on broadband DSL and they dont seem to know they say that isnt there job its msn's so i asked them and they said no it is quest broadband since i am with them i just get the run around i have IE 6.0 ihave java plug in 1.4.2. o3 yet it says not verified, i have java 1.6.o o1 i have java plugin 1.6.0 01 i have that twice ? dont know why. and java envirinmemet i have the right stuff cuz like i said it plays or works on explorer not msn browserer bar. i see no picture's in center of the page as it tries to load it is a blank page any help thank you i have been trying going on 3 weeks now thanksI agree with the other posters; try Firefox. It sounds like a bit of a mess and what you may need is an onsite PC tech to do some maintenance on your PC.
Also, learning to properly use punctuation (particularly periods) might not be a bad idea. As it is, your post was very hard to read.
Good luck!

My macbook pro no longer connects automatically to my wi-fi network

Does anyone know why or how to fix the fact that my macbook pro no longer automatically connects to my wi-fi network?

Delete all the preferred WiFi networks, and try making the current one the preferred network in your Airport Utility setup.

My macbook pro no longer connects to my TV with the mini dvi to hdmi adapter. It was working fine now I cant get it to output to the Tv. Any ideas?

My Macbook pro no longer outputs to my vizio led tv. It was working fine now I cant get any picture. It just says no signal. It is not the hdmi or the adapter because it works fine with my other tv. Any ideas on how to resolve this would be greatly appreciated. Please be as specific as possible. Thanks. BTW--I am using the mini dvi to hdmi adapter in case that was unclear.

Since you say that the same connectors work on your other TV is suggests that the fault is not in the connectors but your Vizio TV. I would check the settings on the Vizio TV. Verify that is is set to receive HDMI input. Perhaps you or some one else has inadvertently changed them. Pressing the wrong buttons on a remote control device can do that. (I am assuming no changes were made in SYSTEM PREFERENCES>DISPLAYS)
Ciao.

I have set up 3 mails in my outlook macbook pro, i am getting old mails for my company account mail, and i am not getting any mail to my hotmail, please help

I have set up 3 mails in my outlook macbook pro, i am getting old mails for my company account mail, and i am not getting any mail to my hotmail, please help

daily i receive 100 old mails, which are already read

Why will my macbook pro no longer connect to my tv?

Hi all,
Until a recently I had no difficulty connecting my mid 2010 macbook pro to my LG tv using a mini display port to HDMI cable. The software on the Mac is OS X Lion 10.7.3 Now when i plug it does not work. The tv recognisies the computer is plugged in but it enlarges the screen so can only see a small part and the display on the computer does the same so I can get into the display menu to do anything there. When I unplug it it goes back to normal but i cant do anything with the display preferneces as its not plugged in. I have tried a new cable but this didnt work. Any suggestions?
Thanks

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

IMac and Macbook Pro no longer connecting to the Wifi?

Hi there,
I've been in London this weekend, only to return home to find issues connecting to my wifi. Weirdly, it's only the iMac and Macbook Pro having trouble, everything else is connecting fine e.g iPad, Phone, Android Tablet etc.
I'm getting disconnected around every 20 seconds and cannot figure it out! It's so frustrating as I'm wondering if there's been an update released for OS X that it has downloaded recently? Especially seeing that when I run windows from bootcamp on my iMac, it doesn't disconnect. And I also don't believe it's an issue with the hub.
Has anyone got any suggestions? I've tried removing the network and re-adding, help for about an hour but still not much use.
Thanks, Matt

Wi-FI connection drops
Wi-Fi Problems in OS X Yosemite
Wi-Fi Problems in OS X Yosemite (2)
Wi-Fi Problems in OS X Yosemite (3)
Wireless Diagnostics
Also try turning off Bluetooth.

My computer is no longer connecting to the TV. through HDMI

My computer is no longer connecting to the TV. I was using an HDMI and an adapter to my macbook pro 2013. It was working perfectly fine eariler today but then stopped working. I tested it on another mac and it did not work as well. The HDMI is alright since we tested it on the PS3 answers please?

Wow... I found this in another thread from the user DocBlueDog, I did this and it worked.
Looks like Apple's latest update screwed up a lot of iPod owners... that's horrible.
Anyways, if anyone is having the same problem, try this:
Re: OK Here is A WORKING SOLUTION
Posted: Feb 3, 2006 9:20 AM in response to: DocBlueDog
Click to reply to this topic Reply email Email
Just got off the phone with amazing tech support guy at www.ipodresq.com -
He talked me through this without having to send in my ipod. AMAZING.
(This is a second hand description. Evaluate it and try it at your own risk).
So disconnet your ipod. Quit Itunes.
Go to your utilities folder and look for ipod updater.
Inside you'll see a folder IPOD SOFTWARE UPDATER and DISK UTILITY.
Open DISK UTILITY AND the most recent updater IPOD UPDATER 2006-01-10.
Reset your ipod by holding down the menu key and the center key together until an apple logo appears. Plug in your ipod.
Ideally you will see it in disk utilities. In the ipod updater go ahead and hit RESTORE. Yes this will wipe your ipod of all data but hopefully most of it is in itunes or on your computer.
When updater is done HIT CANCEL and then quit updater and quit disk utilities. It should be on your desktop.
Just to be safe disconnect your ipod and reconnect it. (superstition).
Launch itunes. It may attempt to update your entire itunes library. Mine said there was not enough room so I just hit cancel.
Then I couldn't drag anything to the ipod because the ipod options were set to automatically update and I had to change it to manually update. Now I am relouding my librarys to my ipod which is working with my computer again.
WHY I should have to deal with calling apple and being told my ipod needed to be sent in to be repaired is beyond me. Love this companies products but wish they would step up more on support.
Good luck.
All best,
Rob

Late 2011 MacBook Pro stuck at spinning wheel of death after a Thunderbolt issue, HD erasing and fresh Lion install from Recovery HD. Please help me!!!

So, I think the title says it all, but to give you a little more info:
I connected my late 2011 MacBook Pro to my TV using a Thunderbolt HDMI adapter, and closed the lid. When I opened it, it wouldn't show the login screen, so I restarted using power button. Got stuck at the Apple logo with the spinning wheel. So I booted the Recovery HD and found out it was a HD problem, so I (reluctantly) erased the HD and installed Lion from scratch. When it rebooted (after DOWNLOADING the Lion components) I got some terminal commands (sorry for not being more specific, still a noob when it comes to Mac) and then the screen faded and a message appeared saying I needed to reboot the computer. So I did. 3 effing times. Then I got stuck AGAIN at the spinning wheel, and I'm currently with that on my screen. I'm trying the forums before calling Apple (my computer's still within the 90 days of warranty) because it's not yet 9 A.M. where I live

can you go back to recovery mode then open disk utility.
in disk utility, higlight the disk, the one saying the brand and size then click on repair disk under first aid tab
if it repairs fine, that's okay
if repair was not successful, go to partition and change current to 1 partition then apply
install lion again
hope this helps

HT1277 When I delete email from my actual hotmail, yahoo and gmail accounts online, it does not delete from my MacBook Pro Mail accounts that I created for hotmail, yahoo, gmail. I thought sync'ing these accounts would do this. Please help :-)

MacBook Pro 13.3/2.3/2X2GB/320/SD-USA with Mac OS X v10.5
I've set up my Mac - Mail with my yahoo, gmail and hotmail accounts and can successfully send and receive mail. However, when I go online to my actual yahoo, gmail and hotmail accounts to delete unwanted emails or to move those emails into subfolders, my Mac - Mail is not updated. How do I do this?
Also, if you can help show me how to view my hotmail folders in Mac - Mail, I would greatly appreciate it.
Thanks!!
Tessy

Is it POP or IMAP? - see Mail/Preferences/Accounts - highlight an account and see what the Type is.
Try Mail/'menu bar'/Mailbox/'Take All Accounts Online'

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!!

Similar Messages

Maybe you are looking for