External Display flashes on and off will not stay on.

When I turn on my Samsung external LCD display which is connected to the iMac, it flickers on and off and will not stay on. What could cause this problem. I tried different resolution settings to no effect. I had been using the display without problems until recently. I wonder if it was a system software update.

Are you using some sort of adapter to hook it to the Mac? I know on my iMac that I use an external monitor on I use a mini DVI to VGA connector. If you are using something like that it could be the adaptor.
I would think if it was software there would be more posts on it. Yours is the only one I have read on this subject.

Similar Messages

Computer display flashing on and off

So for the past couple weeks, whenever we turn on our computer, our display flashes on and off to the point to where its practically unusable. Eventually it stops after at least half an hour of blinking, but I was wondering, what could be wrong and how could I fix it? The computer isn't really affected, between flashes it isn't shutting down and the log in is still available, however, it only shows what I'm doing for a second before flashing back off. We tried switching displays but that didn't work either. Is there anything that could be done or should we just get rid of it?

Glad that you found the cause, expensive as it may be. I am not sure about this Out of Range message. What sort of monitor are you using? Most will connect and the Displays preferences self adjust.
Within the preferences are a number of display resolutions and refresh frequencies (in Hz) but these are not always shown (for example with my notebook monitor it displays resolutions not refresh rates (always the same for the built in monitor) but when I attach a monitor, such as HDTV or projector, I am offered a range of rates for each resolution.

I have just bought a MacBook Air and i cannot play videos from the internet as it asks for a flash player to be installed i try to download Adobe flash player and it will not allow me to do so?

I have just bought a MacBook Air and i cannot play videos from the internet as it asks for a flash player to be installed i try to download Adobe flash player and it will not allow me to do so?

Ziatron is correct that Flash does not work on an iPad, but it does work on a Mac. See Adobe Flash Player 11.2.202.160.

Installed iOS 5.0 and wifi will not stay up on my phone and only way to reset it is power reset my wireless router? Please help this is driving me mad!!!!

Have iPhone 4 just installed iOS 5.0.1 and wifi will not
Stay up on my phone even though router is 10 feet away
And cannot recover wifi except by resetting router never. Asks for
PW etc? Plus battery life is reduced on this iOS?

Try a SMC reset:
http://support.apple.com/kb/HT3964
Try a NVRAM/PRAM reset:
http://support.apple.com/kb/HT1379
If no joy, take it back, and take full advantage of your warranty!
You also may want to let Apple know about this as well:
http://www.apple.com/feedback//
I wish you the best

Second Display flashing on and off randomly

Since upgrading to Lion, my second display (ViewSonic VX2235wm) flashes on and off frequently. There doesn't seem to be any pattern to it. Has anyone else experienced this behavior? This problem is with a second display hooked to my 2.4 GHz Core 2 Duo iMac. It's driving me nuts!

I've since tried other resolutions and haven't found any others that are stable. I've used the monitor with another system and had no problems and the problem started immediately after the Lion install, so the issue is clearly Lion-related.
I haven't heard of many people having this issue, so I'm contemplating upgrading the monitor to get around it. (Longterm, the 1360x768 solution is unacceptable to me as it stretches the image.) I think it may be specific to a few makes/models of monitors and possibly even to a graphics chip/monitor combo. I think if it were more general, there would be more noise about it: a two monitor set-up isn't uncommon.

MacBook Air is just flashing on and off but not working after trying updates

This morning I got notification that I was supposed to update my MacBook Air with both update for iTunes and update for Firefox.
I hit yes to both.
Now I am just getting a constant flashing on and off and blank screen alternating with brief picture of the Apple with bar underneath it.
Have turned on and off several times and still won't work.
Ideas/

Welcome to the Apple Support Communities
I don't think that the iTunes and Firefox updates could do this, but it looks like the logic board is damaged. What happens when you press Shift key while your Mac is starting?

I have tried on multiple occasions to download the new flash player and it WILL NOT download

I have tried on multiple occasions to download the new flash player. It will not even get me to the run screen.
Help

Hello,
Welcome to Adobe Forums.
Are you using a MAC or Windows ?
Which browser are you using ?
What happens when you try to download, any Error ?
Thanks,
Vikram

ICal 5 ... I quit and force quit and it will not stay closed!

I upgraded to the new OSX Lion ... since that time, iCal will not stay closed. I quit and force quit, but a couple seconds later, it opens again and appears on my dock.
Anyone else having this issue?
Thanks

Harryc78091210 please check the activity monitor located in the Applications/Utilities folder. You can also restart the computer and then install Photoshop CS6.

MacBook Display is Scrambled and System Will Not Boot Up

I have a 2007 15" MacBook Pro. The display is scrambled and the system will no longer boot up for me. I've connected an external display and it shows the same thing, so it's not an LCD issue. Most of the time I can't even get the computer to boot up anymore. It just goes to a solid white or solid blue screen. The only time I can actually log in to my computer is if I boot up in safety mode, but the screen is still scrambled and the computer does not work properly. Most of the time it crashes, going to a black screen at some point. Here is a link to an image of the display: https://fbcdn-photos-d-a.akamaihd.net/hphotos-ak-xfp1/t1.0-0/10463936_1015252696 9309534_2355610140415446061_n.jpg

That sounds like a failed logic board or display module on the logic board...either way you need to take it to an Apple store genius bar and have the techs test it to see exactly what has failed. The testing is free so give the techs a chance at diagnosing the problem.

Blue screen on c7280 all in one reads b851fe84. lights flicker on and off. will not turn off.

HP Photosmart C7280 All-In-One printer. Operating system is Windows XP. This has happened sporadically over several months. A few weeks ago, I inserted new ink cartridges and that seemed to stop the problem. Now, it has returned. The on/off button will not turn the printer off. The photo-menu, print photos, auto answer, on/off button, plus a light near the card slots all blink on and off. The PhotoSmart Express displays a blue screen with B851FE84 written on it. On occasion, I have received other blue screen messages but they appear for just a second or two. I believe one earlier today was B01B17FC but it only appeared for a second or two so it may not be correctly recorded.

Hi there danshelby,
This article should help resolve the errors you are getting and provide some good information:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03081973&cc=us&dlc=en&lc=en
Give the steps a try and let us know if it helps.
Best of Luck!
You can say thanks by clicking the Kudos Star in my post. If my post resolves your problem, please mark it as Accepted Solution so others can benefit too.

External monitor flashes on and off randomly after wake from sleep

I have a Mid-2009 13" MacBook Pro 2.26GHz hooked up to a Samsung SyncMaster 2033 External monitor via the MiniDisplayPort-DVI connector.
After waking from sleep, the external monitor will go blank for a fraction of a second at random intervals (display on the MBP remains normal). The flickering clusters are about minutes apart, while flickers within a cluster (usually 2-3 flickers per cluster) is of order seconds apart. "Detect displays" will not make this go away. The only way I can make it go back to normal is to unplug-and re-plug the MiniDisplayPort connector on the MBP.
Anyone else got a more elegant solution to this that does not involved wearing down the displayport?

I tried this. No change. However, I did start playing with the Display settings. Oddly enough, when I change the disfunctioning monitor to 720p it starts working again. Does this mean anything to anyone?

Dead iPad3. Recovered it in iTunes, but still the display is dead and it will not work.

My ipad3 will simply not work. It froze and the display went black.
I've tried to recover it by putting it in recover-mode and connect it to itunes on my computer (Windows 7).
Itunes found the ipad and the recovery worked out fine (according to iTunes info the ipad battery is charged 57%).
However, the ipad still will not switch itself on? I have tried the on/off and home button trick as well as the recover in itunes.
Any other tips?

Frozen or unresponsive iPad
Resolve these most common issues:
    •    Display remains black or blank
    •    Touch screen not responding
    •    Application unexpectedly closes or freezes
http://www.apple.com/support/ipad/assistant/ipad/
iPad Frozen? How to Force Quit an App, Reset or Restart Your iPad
http://ipadacademy.com/2010/11/ipad-frozen-how-to-force-quit-an-app-reset-or-res tart-your-ipad
What to Do When Your iPad Won't Turn On
http://ipad.about.com/od/iPad_Troubleshooting/ss/What-To-Do-When-Your-Ipad-Wo-No t-Turn-On.htm
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281
iPad: Basic troubleshooting
http://support.apple.com/kb/TS3274
 Cheers, Tom

MSi GT70 - 0NE-276us Sudden Power Off/Will not Stay On

First and foremost, thank you for taking the time to read about my problem. No sob story, however this is my only computer and it was/is my work machine in the IT Administrative/Deskside Workplace. Any ideas are welcome.
I have an MSi GT70-0NE 276us Laptop. I bought it last year (Christmas). I was playing a game on Steam when suddenly the machine turned off. Using my troubleshooting experience, here is what I tried:
-Removing the battery and power supply from the machine and holding power button for 1 minute
-After testing with ONLY the battery inside the machine, pressing the power button makes a white flash and a shimmer of light sent to the keyboard, but doesnt actually turn on. It does this upon each keypress and does not skip a beat.
- I tried to connect the power supply directly into the laptop WITHOUT the battery connected, and it does the same thing. As for the battery indicator light, it does not stay on as it normally would when the power is connected to it.
NOTE: I have NEVER used my laptop WITHOUT the power cord connected; it is always attached since I know its a power hog.
- I have checked for any smells of burning/melting and there are none. The laptop was also not that hot when it cut off suddenly.
- Ive blown the mainboard/underside with compressed air and removed all of the dust
- Ive made sure the fan was clear and connected
- Ive reseated the RAM
- I have NOT tried another power brick; the one I received was refurbished.
- The LED on the power brick lights up but nothing is coming into the machine
- I have not had the laptop 10 months and its always connected to the wall/power outlet
So if it is the motherboard, I wouldnt be too surprised but Ive know MSi to make excellent motherboards, hence the reason I spent 2500.00 on it. A fellow IT friend said I may want to try a new power supply that has the exact specs your laptop needs. As if its possible the load on the end of the power brick that goes into my laptop may be done for.
I removed the Battery and noticed this:
The inside of the laptop after removing the battery say
MS 1762
DC Rating 19V=9.5A
My Battery says (MSi battery)
11.1 Vdc = 7800mAh, 87 Wh
..But the power brick reads
Input 100-240 V ~2A 50-60Hz
Output 19.5 Volts =7.7 A
He suggested trying a new power suppy but Im concerned its the motherboard (because us IT Guys know the motherboard will get you everytime)
So is it possible? Im not sure why they may have given me the wrong power brick, if it is wrong. He says the specs dont add up, and since each time I press the button and the white light flickers and part of the keyboard, he said it may be the power bricks' node that connects to my machine. Im used to motherboards that are done for the machine shows no sighns, no hints, no flickers. This is atleast flickering, just not coming on .
I know its alot to read and I appreciate all of the techs/other users time.

Thanks guys. Your input is not falling on deaf ears and it seems im getting reputable support via the forums with the MSi tech team.
It really is so weird. Today I tried the process of elimination from a video I saw on you tube. Now, keep in mind, each time the power button is pressed with either their power brick/battery alone in the machine, the power light and the 'battery' indicator light at the front of the machine flicker (each keypress; even if you do it rapidly).
I took the bottom tray off and checked the fan and blew it out with compressed air. Checked the thermal paste under the processor heatsink, checked the processor condition and all looks well there.
Tested by removing one connection at a time then testing for power (all along while testing, keep in mind I only have the 19.5v 7.7 amp power brick.)
- removed D:/ drive secondary then checked for continuity; no luck
- removed all 4 ram sticks and tested one at a time with the power supply connected; no continuity
- removed the keyboard ribbon cable and tested; still no luck
- removed (what I believe to be) the usb ribbon cable (hub with 3.0 ports) and tested for any indicator lights; still no luck
- unplugged the cmos for 5 mins and reconnected; still no luck
*NOTE: when I look underneath of the laptop when pressing the power button, the fan that has the gpu and the cpu heatsinks up against, it actually spins for a brief second; about as long as the power button flashes.
I stopped at some stores looking for a 180+ watt adapter and i couldnt find one that carried it. I wanted to test it before purchasing, so Ive avoided online purchase up to this point. However, I do realize I need one anyway at this point regardless.
My buddy has his own PC Repair shop. He doesnt have a power brick of that magnitude, but cant we get a voltmeter and check for continuity from not only the power supply, but also the jack soldered on the motherboard?
He is saying kinda what Dark is saying... Me, I think its a short somewhere... he thinks the computer asked for too much power from the power supply and probably burnt out the tip because at the time it cut off, I was playing a graphic intensive game, and in my USB 3.0 ports on a single hub, I had the following connected:
- A Logitech USB headset (wired)
- an XBOX 360 wired controller
- A Logitech G700 gaming mouse charging
Ive never had that many power hungry devices connected to one hub at one time before.

Split Code and Design will not stay

I like the classic design with the split screen code on top and design on the bottom. Somehow I have gotten it where it will also come up in code, the splot and design are greyed out. I can force it to split with the layout, and I save this as a template. But whenever I bring up a new page, I either have to reset the template or hit layout to force the split. Very annoying.
I have looked all over and I cannot see a setting. Live view/Live code are off, in fact greyed out. I just tried to reload the software completely and this did not reset it.

I opened a case to Support, and they fixed it. I needed to delete the Configuration file and then edit the regedit, removing the CS4 entry. I did not have much in the way of customization,so it was not a big deal.
My thanks to the Suport Team.
Re-create the Dreamweaver preferences folder to eliminate problems that
a damaged preferences files might cause.
Note: When you use this solution, Dreamweaver will create a new
preferences folder and you will lose custom settings associated with
your current preferences file. However, the folder you rename in step 2
is your original preferences file. If you determine that the preferences
files is not causing the problem, then you can restore your custom
settings by following the instructions below.
Disclaimer: This procedure involves editing the Windows registry. Adobe
doesn't provide support for editing the registry, which contains
critical system and application information. Make sure to back up the
registry before editing it. For more information about the registry, see
the Windows documentation or contact Microsoft.
To re-create the Dreamweaver preferences file:
1. Quit Dreamweaver.
2. Rename the Configuration folder (for example, Configuration old)
in the "\Users\[user]\AppData\Roaming\Adobe\Dreamweaver CS4\(
installation language)\" folder.
3. Choose Start > type regedit, then press Enter, and click Continue
for the next dialog box. (note, this did not work in Win 7, had to get help to find new regedit).
4. Browse to the following location:
HKEY_CURRENT_USER\Software\Adobe\Dreamweaver CS4 and delete the whole
Dreamweaver CS4 folder then close the registry editor.
5. Start Dreamweaver. Dreamweaver creates a new preferences file.
If the problem continues, then the preferences file isn't the cause. To
restore custom settings, delete the new preferences file and restore the
original name of the previous preferences file.

Since I ipdated photoshop CC 2014, my layers and brush panels (and others) will not stay open. AS soon as I open them, they close. Anyone have any ideas on how to fix this?

Trying to open my layers or brush panels in photoshop Cc 2014 and they won't stay open. They close as soon as they open. This started immediately following the latest update that I ran today.

Try resetting the PS preferences and check if it's an issue with corrupt preferences : http://forums.adobe.com/thread/375776
Try to open PS in Plugin Disabled mode and check the same. For that Press Shift+PS icon and hit Yes.
~ Arpit

External Display flashes on and off will not stay on.

Similar Messages

Maybe you are looking for