Cannot connect a external monitor

I have a 2012 macbook pro and have been using a external monitor for a few months, when suddenly it stopped working. So I thought it must be the adapter and I ordered a new one. It came in yesterday and still its not working. I connect and my monitor, or tv does nothing. My laptop does the blue transition screen and starts functioning like there is a second monitor but there isnt anything there. I've tested the cable it works with my pc. I've tested it with different monitors and tv's but nothing.
So I figure it must be something with my settings or with the actual port itself, any help?

Sounds like a hardware issue. I'd take it to the genius bar and/or an apple repair to see if the output card is working or not.

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Cannot connect 2 external monitors via port replicator using Portege Z30-16U

Hi All
I need hell I just moved from a other laptop to the Portege Z30-16U, I have spent hours trying to connect my 2 external monitors to my Hi-Speed Port replicator III 120W but my laptop will only see one monitor.
I have been using 2 external monitors with my laptop for yrs as I do a lot or reading and I do not want to use only one and the laptop screen.
I have tried VGA cables and mix of a VGA and a HDMI but nothing is working.
Can anyone tell me how I can connect and view 2 external monitors with this laptop and port replicator, I cannot believe it is not possible it would make no sense that Toshiba would be so technilogically behind other laptop manufacturers.
Thanks
Liga

Hi
I am not familliar with the Portreplicator of Z30, but the general behaviour of the dual-displayconnector replicators is that 1 can be used.
Not 2 simultaneously.
I may be wrong and you should easily be able to check this - use only 1 at a time.
First one, then the other.
If both works when used alone, then my suspicion is right.
Hope this helps!
BR TOm

Possible to connect an external monitor to HP Pavilion dv4t-4200 CTO Entertainment Notebook PC

I have a HP Pavilion dv4t-4200 CTO Entertainment Notebook PC model # A1M02AV and it has a VGA port, one that looks like a phone/broadband cable port, and one that looks like a USB port but indented on either side at the bottom. Can I even connect an external monitor? How do I find out if I have more than 1 video card? Besides the usual USB/headphone ports, I don't have any other ports. It says my drivers are up to date...but I don't even know what I should be looking for. Do I need to install something or buy some sort of adapter?
I am trying to connect a Dell external montitor via the VGA port with a VGA cable. The monitor has power but my notebook does not recognize/detect it. However, when I first plugged it in, my notebook display shrank into a square (vs the whole screen) so it recognized something...but nothing happened on the external monitor.
I tried detecting it via my display settings, but I accidentally changed some dispaly setting so that the home desktop only shows on monitor 1, but unselected my actual notebook display or something or changed it to be monitor 2 (even though monitor 1 does not exist), so when I plug the cable in to my notebook, all of a sudden my desktop goes away and it's a just a blank background screen - and I cannot access the computer display settings or anything.... when the cable is unplugged this setting looks normal, so I can't figure out how to fix it.
Sorry, I have no idea what I'm doing here - please help!
This question was solved.
View Solution.

Hi,
All Dell monitors come with CD's for drivers. Your laptop may not know the monitor w/o its driver, it won't install automatically. Please check:
Ringht click a blank space on desktop,
Click Personalize
Click Display
Click Change display settings
Can you see BOTH laptop screen and external monitor in there as shown on the following image:
For testing, I put my Dell monitor is my main display. If I can't see 2 monitor, you need its driver first and then check the cable.
Regards.
BH
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I cannot connect my external hard drives (1 WD My Passport and 1 LaCie Porsche Design). The drives were connected and worked perfect, the WD is used as a Time Capsule, the LaCie is formatted as exFAT and used for miscellaneous. They are both USB 3.0

I cannot connect my external hard drives any longer. I have one WD "My Passport" used as a Time Capsule and one LaCie Porsche Design used for all different kind of data, formatted in exFAT. They worked fine, connected direct or through an additional USB hub or also attached to a Dell monitor. The Lacie helds my iTunes Library and the iPhoto library.
After I moved the iTunes library to the external drive, from time to time the drive went into a never ending loop and I had to shut down the laptop (MacBook Air).
The last time starting again the drives were not recognized any longer. I tried to connect them to another MacBook, which didn't work.
Starting with Windows 7, the WD is also not recognized at all (perhaps because of time capsule format?) and the LaCie gives an error.
Could anybody tell me if there is a chance to get them alive again? When I connect them now, they start to heat up quite fast without anything else happening.
Thanks

Hi,
Just want to clarify, have you checked to make sure the cords are not damaged (going from hard drive to computer and or any power source )?
You have also check to make sure that usb ports are working correctly?
If you have checked these things it may be that the external drives have failed.
I would google the error message from the LaCie drive before I do anything.
There are several ways that I know of, one is to put the hard drive in the freezer for a while (make sure you wrap it air tight) if this works it is not a permenint fix. You might be able to transfer information to another source.
The other method is to plug the hard drive into a hard drive connector a product like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817707192
to do this you would have to remove the hard drive from its enclosure and still this is not a guarantee it will work.
The finally way I know is using a recovery service. This can be rather expensive, and there are no guarantees

I connected an external monitor to my MacBook Pro, but it doesn't open any programs. It Just sits there with a blank screen. How do I get it to open programs and act like a monitor?

I connected an external monitor to my MacBook Pro, but it doesn't open any programs. It Just sits there with a blank screen. How do I get it to open programs and act like a monitor?

Dear Jean:
It sounds like you are trying to get your external monitor to act as the primary viewing screen. For example it would have your Doc, Icons, Etc. In order to make the external monitor the primary screen you have to:
Open System Preferences.
Choose the Displays Icon
There will be several tabs to choose from pick Arrangement
Drag the toolbar to desired display
Let me know if this helps at all!
Lance

How do I connect an external monitor to my MacBook Air?

How do I connect an external monitor to my MacBook Air?

With a minidisplay port to VGA or DVI or HDMI adapter:
http://store.apple.com/us/product/MB570Z/B/mini-displayport-to-dvi-adapter?fnode =53

How to connect an external monitor to macbook pro. The monitor has no usb connector without a usb

How to connect an external monitor to macbook pro. The monitor has no usb connecter, only a port.

Most MacBook Pro models have a Mini DVI port, a Mini DisplayPort or a ThunderBolt port for connecting an external display. USB does not have enough bandwidth to support a responsive display connection.
What model MacBook Pro do you have, by year, CPU speed or MacBook Pro 3.1 designation?

Connect two external monitors to mini DP(using a mini DP to VGA adapter) and the VGA out at once

I am trying to connect two external monitors to mini DP(using a mini DP to VGA adapter) and the VGA out at once. Windows recognize both monitors as well. But it dowsn't let me use all three monitors at once(see the below image). In the dropdown, it lists all three monitors. Problem is there are two active displays I can select.

Mavec wrote:
I would like to add a third monitor.
The GPU(s) in your T400 (and most other laptop brands) will support two different displays concurrently. If you want to support more than two different displays concurrently, you will need another GPU external to the T400.
Generally, if you want to use two external displays on a T400 you will nee dto use a docking station.
I have read messages on various fora on this topic and know that there are a number of ways of doing this, but as I have never had a need to do this myself I can't tell you how to go about it.
Cheers,
Bill
I don't work for Lenovo

How to connect two external monitors to a Mac Book Pro?

How to connect two external monitors to a Mac Book Pro?

Not as is, but Matrox makes a peripheral that enables connecting more than one external monitor - matrox.com.

Connect an external monitor

I am unable to get my hp pavilion entertainment pc to recognize an external monitor - orion
please help
is it my resolution settings?
I am using windows vista
thanks

Hello lindalou63,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand you are having issues when trying to connect an external monitor to your computer running Windows Vista. I am providing you with an HP Support document: Connecting Monitors and TVs to Your PC (Windows Vista and XP), which will walk you through the steps required to correctly connect a monitor to a computer running both Windows Vista and XP. I would suggest you review the document and ensure you have followed all the steps provided. This should resolve your issue and let you get back to enjoying your computer again.
Please re-post if you require additional assistance. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
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I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

What is the best solution/product to connect 2 external monitors to MBP ?

Hi!
1. Can I use my MBP 13" (2011 i5) monitor as secondary when I connect an external one?
2. Which solution is the best to connect 2 external monitors to my MBP 13 2011 i5 ?
Thanks!

v470510c05 wrote:
1. Can I use my MBP 13" (2011 i5) monitor as secondary when I connect an external one?
Yes. You can mirror or extend as been so for many years.
2. Which solution is the best to connect 2 external monitors to my MBP 13 2011 i5 ?
None, the graphics card is poor integrated graphics and it can barely drive one external monitor, much less two.
If you wanted two external monitors the machine to get is the Mac Pro.

Problems connecting to external monitor

Hi, ive just purchased a imac this week and one of my first tasks is connecting a external monitor to watch my films on. Ive watched a few youtube tutorials on how to do it and it seemed easy, the items i have are:
1, Hdmi Cable
2, Mini displayport to Hdmi adaptor
3, 32 inch samsung 1080p hdtv
So i connected the hdmi cable to the hdmi2 socket on my tv, i then connected the hdmi cable to the mini display adaptor and then connected the adaptor to the mini display port on the back of my imac, so now according the videos on youtube, both monitors are supposed to flash blue and then the display will appear on my tv. But absolutely nothing happens, my imac screen doesnt flash blue, and my tv still says "HDMI 2 - No signal".
So im stuck know on what to do next, i tried changing my screen resolution to a lower resolution on my imac just incase the tv wouldnt pick the signal up becuase it was too high of a resolution but that hasn't worked.
I know its not my tv and its not the hdmi lead as i connected it to my xbox360 and it worked fine. My first suspicions were that the adaptor was faulty, but i disconnected the wire and removed the adaptor from the back of the imac, i then attached the adaptor back to the hdmi cable ( while not attached to the imac) and the tv went completely blank for 3 seconds and came back to "Hdmi 2 - no signal" So im guessing the adaptor isnt faulty?
Any suggestions or help on this subject would be great!
Thanks
Message was edited by: Kiz5000

Have you tried resetting the PRAM?
Reset the PRAM
• (Re)start the computer
• Immediately press & hold the CommandOption+PR keys
• Wait for two startup chimes
• Release the keys and allow the computer to boot.
Also Apple suggests that you always turn on the display/TV first before turning on the Mac so that the Mac gets a good read on the display's identification of itself to the Mac. I would power down both devices and connect all of the cables. Then power up the TV and lastly power up the Mac.
Dah•veed

Hp dv6 1355dx laptop - how do I connect 2 external monitors?

I have a HP dv6 1355dx laptop Entertainment PC. How do I connect 2 external monitors (both have VGA cables) and neither one has HDMI connectors. My laptop has only 1 VGA connector, so I can display my laptop video and 1 of the external monitors.
Any help would get greatly appreciated. I am even willing to buy a docking station or port replicator.

Hi,
Docking station or port replicator won't solve the problem because of your internal graphics card. You need something which is similar to the following products:
http://www.matrox.com/graphics/en/products/gxm/
or USB to 2 VGA monitors but very hard to find (normally you can only get 1 VGA and 1 other, not both VGA's).
Regards.
BH
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Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Satellite Pro U300: DVD issue - error: cannot output to external monitor

Hi,
I was having problems playing a dvd on my U300.
Basically the software would load but when I tried to play the dvd it said "cannot output to external monitor".
Having gone through all options I could not find anything to stop this happening. I then downloaded the latest software from the toshiba site.
dvdpl-20070807102909.zip
I resintalled this but got the same error message.
I then uninstalled the software and tried to reinstall but now it just produces an error mesaage saying it cannot intsall the software on this computer.
How can I reinstall this?
Regards,
Mark

I presume you have received the Toshiba Recovery CD. Am I right?
On this CD you can find the Toshiba image file. This image contains the Vista OS, Toshiba drivers, tools and additional software.
But note; you cannot install only a single program. To reinstall a application from the Recovery CD you have to format the HDD and have to reinstall the whole OS using the Recovery CD.
As Gipsyman said, the Toshiba driver page contains update and the original preinstalled software is needed.

Difficulty connecting my external monitor to my macbook.

I'm having difficulty connecting my external monitor (Acer) to my macbook.
At first, It worked fine. Then, about 2ish months later, it stopped working.
Now, when I hook the external monitor up both monitors start flashing a blue screen.
I thought it was because my adapter broke but I bought a new one and the problem still persisted.
I hooked the external monitor up to a pc laptop and it worked just fine.
Any suggestions????????

What Macbook Pro do you have? Does it have an HDMI port? Does it have a minidisplay port? If it has an HDMI port get an HDMI cable. If it has a Mini display port get a mini display port to HDMI adapter and an HDMI cable.
Does ypour monitor have other than an HDMI port such as a DVI port?

Cannot connect a external monitor

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