Monitor random flash off then on

I have a HP Envy laptop OKed up to a HP Pavilion 23fi monitor. The monitor screen randomly flicks off then back on. No lights change, no changes to the laptop screen either. It happens during any program or just while looking at the desktop.
It's not the cable.

Hello georeid,
I understand that your monitor is experiencing random flickers while connected to your laptop, and I would be happy to assist you! To begin, I will need to ask you a few questions:
Is your monitor connected with a VGA, DVI or HDMI cable to your laptop?
Is this an on-going or recent issue?
What version of Windows do you have installed on your laptop?
In regards to the flickering on the monitor, please follow this document on Display Quality Issues when the screen flickers or is unstable. This should help determine if there is an issue with the graphics adapter or with the monitor display.
Please re-post with the results of your troubleshooting, as well as the requested information. I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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Monitors randomly turn off!

We have a PowerPC G5 which works perfectly fine (or was). We moved it to a different part of the office to be used by somebody else.
At the old location it was hooked up to 2 CRT LaCie monitors. At the new location it's hooked up to 2 LCD monitors.
While the editor is working, the monitors will randomly turn off for a few seconds, and then turn back on! There has been no system changes since the move, nor any new software installed (to my knowledge). On his old mac (a slower PowerPC G5), his 2 LCD monitors worked perfectly fine. Any idea what's going on?

cheak your graphics card. I think I reading post that the ATI has overheating issues, expecially when dusty. I have a 2008 Mac Pro with the 2600, and have similar problems.

Monitor is flashing off and on

I just started up my computer this morning and my monitor (30"cinema) was flashing off and on. I have my Cinema preference setting to "turn the display on and off". I managed to keep it on long enough to change to "does nothing" so it stays on, but I really need that functionality for rendering overnight and not leaving the display on.
I checked the button and nothing is blocking it. Could it really just burn out if I never actually use it more than maybe 10 times? Is there anything I can do to troubleshoot this?
thanks,
Dave

<http://support.apple.com/kb/ht2811>
Sometimes just unplugging the display from power and the computer for a few minutes will fix things.

Mac Pro monitor keeps flicking off then on.

I am currently having a problem with my monitor flicking off then on. Mainly while gamming but other times as well. Sort of looks like the energy saver is trying to put my monitor to sleep. Takes about a second for it to come back but is very annoying. several times after it comes back the current image on screen turns into a jigsaw with the pieces mixed up. i am currently using:
ATI Radeon HD 5870 1024 MB
Display Type:          LCD
Resolution:          1920 x 1200
Pixel Depth:          32-Bit Color (ARGB8888)
Display Serial Number:          2A92715H0K0
The graphics card is new and i had this problem before with the apple card installed so know its not that.
I actually had this problem not long after i bought the computer from next byte but they could not replicate the problem so gave me the computer back.
Flicked off then on as i was typing this. Only programs that are running are safari and itunes.

System preferences > Desktop and ScreenSaver > Screensaver pane > ( Hot Corners) ...
... make certain all controls are set to Minus, to preclude accidental movement of the mouse in to a Hot Corner from activating the ScreenSaver and thereby momentarily blanking the screen.

Randomly Shuts Off Then Screen Stays Black...?? Very New At This...

So this is my first Mac ever, I bought it from someone off of Craig's List about 4 or 5 months ago. It's a 17-inch PowerBook G4 ... I really don't know much specs about it, I'm not too computer savvy when it comes to specs and rams and ghz and all that - I don't even know what any of that means.
I think I'm running Tiger 10.4.11 .. Or at least that's what someone told me.
Anyways, it's been working amazing until recently - never had a problem with it until now. Whenever I would close my laptop, it normally would go into sleep mode, but within the past week, I noticed that it would turn on while the laptop is closed... I could hear it turning on, and then the Apple on the outside was lit up. The only way I could stop this from happening was to completely shut down the laptop before closing it.
THEN... while I'm using the laptop, it would blink black and then back to normal and then randomly shut down. I would have to press the power button for it to come back on. It would do that several times in a row...
THEN... it started to go black like that, but then when I would try to turn it back on, I could hear it booting up, and it would sound like it's on, but then the screen would remain black.
I could very very faintly see the outline of stuff on the screen, but it would only stay like that for a few seconds then fade to completely blackness. I would have to continually press the power button, sometimes having to restart it several times before the screen actually comes on.
Today, is when it did it for the longest - the screen went out this morning, and I couldn't get it to come back on until maybe 30 mins ago. And that's cuz I got kinda frustrated and slapped the sides on each side of the mouse pad and then the screen flicked back on as if I hit the computer just right for it to turn on.
Sooo I don't know what to do... it's gotten progressively worse with this problem. Being a second hand Mac, I don't think it's under any kind of warranty to take it into the Apple store to get looked at... and therefore, I don't know how much it would cost to get it fixed. If it's even something serious or minor.
I don't have much money to spare because I'm in college currently and barely make the money to pay my tuition.
Oh yea, it also doesn't matter if I'm using it just on the battery, or if it's plugged in. It does it no matter what.
Any suggestions??
Please help...
And keep in mind I don't know a lot of technical terms...
Thanks in advance!
Rev. JC

Rev_JC:
Welcome to Apple Discussions.
There are a number of possible approaches to your issue. At first I thought it may be that your logic board was going out. The it sounded as if you needed to Reset the PMU. Finally, who talked about slapping it around and getting results, it sounds like it may be a loose display cable or something of that sort. Since you are completely new to Macs your best bet would be to go online and make an appointment at the Genius Bar in your local Apple Store. It costs nothing. They will look over your computer and give you an idea of what is wrong and what it will cost to rectify it.
Meanwhile, to help to identify your computer more closely, while the computer is booted go to Apple Menu > About this Mac. That will tell you the OS you have installed, the Processor speed and the computer you have. Please report this info back with you response.
Please do post back with further questions or comments.
cornelius

Toshiba Qosmio x775 Randomly Turns off and on itself.. PLEASE HELP!

Whenever I turn on my Laptop Toshiba Qosmio x775..it randomly turns off then turns on itself..sometimes for just 20-30mins or sometimes less than or sometimes in can run the for many hours..the problem is not with the Adapter because i try to put the battery and unplug the adapter and still it happens randomly..dunno whats the problem with this..
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SO FAR SO GOOD FIX GUIDE-
If you own a Toshiba Qosmio laptop and you are having problems with it powering down for no reason, try this.
1) Unplug all the wires and remove battery
2) Hold down power button for 30 seconds
3) Plug everything back in and start it up
4) Hold F2 to enter boot menu
5) Go to the Advance Tab
6) Set Execute Disable Bit to Not Available
7) F10 to save and exit
SO FAR SO GOOD!

Randomly turns off

had a devour for about 2 months like it, but the last 2-3 weeks the phone randomly turns off then on again. this happens when using any app, on or recieving calls, putting it on a table and charging it. what the heck is going on! how to fix

eviljinsi wrote:
had a devour for about 2 months like it, but the last 2-3 weeks the phone randomly turns off then on again. this happens when using any app, on or receiving calls, putting it on a table and charging it. what the heck is going on! how to fix
HI. I am sorry you are having issues with your phone and I will be happy to look into this for you. How often do you charge the phone? Make sure the battery is not loose inside the phone.
Also try to dial *228 option 1 to see if that helps.
If none of this works, I would suggest you have us take a look at the phone to see if there are any hardware issues what we could replace under warranty.
Thanks!

My MacBook Pro randomly froze during a sync to my iPhone and started making a scratching noise by the power button. I shut it off then turned it back on and it won't take me to the desk tops it will just flash a folder with a question mark in it. What do

My MacBook Pro randomly froze during a sync to my iPhone and started making a scratching noise by the power button. I shut it off then turned it back on and it won't take me to the desk tops it will just flash a folder with a question mark in it. What do I do?

You have a HDD problem (hopefully you have a backup). Start with the information on this support article:
https://support.apple.com/kb/TS1440
Ciao.

Machine randomly shuts off and then comes back on.

Hello! Basically whats happening is my computer randomly shuts off (No blue screen just powers off) and then immediately comes back on.
I am running three monitors and a single GPU. This has happened in two different cities (I moved) I have the same surge protector - however, other things on the protector do not reset / go off (alarm clock no battery).
Here are the crash dumps that microsoft said happened. (I uploaded three different ones)
http://www.mediafire.com/download/juwuzck8wpq6j0r/issues.rar
I'm a pretty avid builder but I'm a bit stumped with this issue. The machine will, at random, shut off completely (including lights) and then come back on, during normal activities and gameplay.
The temps do not appear to be reaching astronomic levels, maxing out at around 60-65c (cpu) and 45c for the GPU.
Parts:
cpu - i7 3960x (turbo enabled normal at 3.3, w/ turbo at 3.9ghz)
mobo - MSI X79A-GD45 /// Intel DX79SI (have tried both, it still happens with either, MSI is a new board.
psu - 750 Antec Gold High Current Pro
gpu - MSI Lightning 680 (no OC)
sdd - samsung 840 pro
hdd - Black 1TB
case - HAF 942-x
cooler - x40 kraken
ram - G.SKILL Ripjaws Z Series 32GB (DDR1600)
Here's what I tried
1. Bought a new motherboard (MSI $260) to see if the issue would go away. - Failed.
2. Was able to reproduce the issue VERY quickly when using the OC Genie2 on the MSI board, with teh button pressed, I could boot up OCCT and have it reproduce the issue with the power-off in around 2 minutes of the test. - Failed
3. Attempted PSU and GPU stress test with stock BIOS, tests ran 1 hr+ each with no issues. Shut down my machine and restarted it this morning and the issue came back within 5 minutes of use just sitting at the Windows Desktop. - Failed.
4. Turned the 32 GB of ram to 1600 and enabled XMP, crashed after 3-5 days.
5. Attempting to test each DIMM individually.
6. Issue happened again after about two weeks of not happening.
I've run OCCT for an hour with the "stock" bios and it didn't crash for an entire hour. I've also attempted to use the "OC genie2" overclock function and that triggered a crash within 2 minutes of the run.
Can anyone give me some more things to try? I'm thinking its possible it could be the PSU, but after running OCCT PSU test for 30+ minutes it had no issues.

* Bugcheck Analysis *
BAD_POOL_HEADER (19)
The pool is already corrupt at the time of the current request.
This may or may not be due to the caller.
The internal pool links must be walked to figure out a possible cause of
the problem, and then special pool applied to the suspect tags or the driver
verifier to a suspect driver.
Arguments:
Arg1: 0000000000000020, a pool block header size is corrupt.
Arg2: fffffa802224f9e0, The pool entry we were looking for within the page.
Arg3: fffffa802224fa50, The next pool entry.
Arg4: 0000000004070006, (reserved)
Debugging Details:
TRIAGER: Could not open triage file : e:\dump_analysis\program\triage\modclass.ini, error 2
BUGCHECK_STR: 0x19_20
POOL_ADDRESS: GetPointerFromAddress: unable to read from fffff800036ca100
GetUlongFromAddress: unable to read from fffff800036ca1c0
fffffa802224f9e0 Nonpaged pool
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: WIN7_DRIVER_FAULT
PROCESS_NAME: chrome.exe
++++++++++++++++++===============================++++++++++++++++++++++==========4
* Bugcheck Analysis *
VIDEO_TDR_TIMEOUT_DETECTED (117)
The display driver failed to respond in timely fashion.
(This code can never be used for real bugcheck).
Arguments:
Arg1: fffffa80262bc4e0, Optional pointer to internal TDR recovery context (TDR_RECOVERY_CONTEXT).
Arg2: fffff8800fa2be20, The pointer into responsible device driver module (e.g owner tag).
Arg3: 0000000000000000, The secondary driver specific bucketing key.
Arg4: 0000000000000000, Optional internal context dependent data.
Debugging Details:
TRIAGER: Could not open triage file : e:\dump_analysis\program\triage\modclass.ini, error 2
FAULTING_IP:
nvlddmkm+153e20
fffff880`0fa2be20 ?? ???

I am new to iphones and went to Itunes and it said my new iphone needed a software update. Now the apps that I put on wont work and when pressed just flash on then off the screen. I paid £20 for one of them so any help would be appreciated.

I have a new iphone and went into Itunes and it said my new iphone needed a software update. I let it do this and now the apps that I put on won't work and when pressed just flash on then off the screen. I paid £20 for one of them so any help would be appreciated.

Memory Map: http://www.memory-map.co.uk/iphone/
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The hold button on my ipod touch 3rd generation does not work and ipod randomly flashes on and off, asking if i want to restart it when no button has been pushed, any suggestions?

the hold button on my ipod touch 3rd generation does not work and ipod randomly flashes on and off, asking if i want to restart it when no button has been pushed, any suggestions?

it might be a malfunction in your device. you might ave to send it to repairation
1.ave you try resetting it or restoring it?
2. did your hold boutons whas working beffor?

Has any one figured out how to fix an issue I'm having. My iPhone 5 randomly shuts off by itself. Then it won't turn on when i try to hook it up to iTunes it says its in recovery mode. so then i hit restore and its been stuck on waiting for iPhone.

This happened after I did a software update on my phone about a month and a half ago. My phone will randomly shut off by itself and wont come back on. I had spoke with an apple repair person over the phone who told me to hold in the home button and then plug it into my computer. When the iphone said that there was an error and gave him a code he suggested that I send it in. So I did and about a week and a half later I get it back and its on. Yet the problem still occurs. It shut off twice in the same day and for several hours would not come on. When it did I called apple again and they ran a diagnostic on my phone and said it was a software issue. So then why was it not fixed? They told me they could not duplicate the problem. And now it happens about once or twice a week now. And its happening right now. I have it plugged into my computer and the apple logo with a bar below it has been on for about 20 min now. And itunes is still saying "waiting for iphone."

Hello Elliiee,
The steps detailed below can help stabilize your iPhone.
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIsand corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If the display turns on, go to step 4.
If the display remains black, go to next step.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
My issue is still not resolved. What do I do next?
Contact Apple Support.
iPhone: Hardware troubleshooting
http://support.apple.com/kb/TS2802
Cheers,
Allen

HT6154 My iphone randomly turned off out of nowhere. I was getting dressed, my phone was working one minute then literally the next it syopped now it wont charge i cant turn it on however the phone is on cause i called it and it rang. What to do? help ple

My iphone randomly turned off out of nowhere. I was getting dressed, my phone was working one minute then literally the next it syopped now it wont charge i cant turn it on however the phone is on cause i called it and it rang. What to do? help please. I tried putting it in DFU mode but my lock button doesnt work and my phone wont charge so i cant connect to itunes

There is no reason to put it in DFU mode, a reset should work. Although, without a working power button it is not possible to reset the device.
Sounds like it is time to replace the damaged device.

Ipod touch screen went black and then started flashing. Then the turn off slide comes up.

Ipod touch screen went black and then started flashing. Then the turn off slide comes up. Restored multiple times and didn't work. Ipod works with Itunes fine (can put music and podcasts on the ipod), but can't take songs off of the ipod. Using windows xp and everything is up to date. Any ideas of how to fix it?

I didn't know that it was posted three times. My computer didn't say that it posted anything.
My ipod still syncs to itunes and I can put podcasts and music on my ipod, but I can't delete songs after I put them on the ipod. When I try to delete songs I try to delete it from the main music list on the ipod. It's also doing all the other stuff that I posted before. The screen will go black and then the power off slider thing shows up for a few seconds, then it'll show the unlock slider bar. Then goes black again. It will also do that when I have the ipod unocked and changing songs or playing a game. I've restored it to the factory default/new ipod and it still does the same thing. I've uninstalled and reinstalled itunes and then restored it again to the factory default and it's still doing the same exact thing. I checked and my computer is up to date.

Srceen goes gray after the apple goes off then the monitor says no signal..

srceen goes gray after the apple goes off then the monitor says no signal.. It been working great for 9 months use it everyday for fcp.. would the video card be bad???

If the video card were bad, you wouldn't get anything to display. The fact that you get the gray screen with the spinning gear means the video card is working.
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If safe mode works, then you have some corrupted preference files or some other program is causing problems. If safe mode doesn't work, you can at least see if zapping the PRAM lets you get any further along with the boot process. Only if both of these fail would I start to consider an issue with the video card.

Monitor random flash off then on

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