External Monitor Flickering On And Off?
Aug 11, 2009
I have always used an external monitor when using windows vista and now that i have upgraded to windows 7 when i plug in my external monitor it flashes on and off. I have changed the refresh rate on the monitor and all it does is change how fast the external monitor flashes. Also, I had this problem when using windows vista and I changed a setting in windows task scheduler and it fixed it. Tried doing the same thing in 7 and the problem is still there. In addition, I tried using a different monitor cable and the problem is still there.
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Feb 25, 2012
I built a new PC about a month ago. BioStar A880GU3 and an AMD Athlon II X3 455 CPU. Also running Windows 7.
I set up two monitors and have them set to extend. Everything has been great up until about a few days ago. One morning I turned the PC on and my 2nd display was totally black. It was turned on and Windows was detecting it but I couldn't see anything. I drug a tab from Firefox over to the monitor and dropped it and the screen started flickering and eventually came on. Everything was cool for the next two days.
A few days later, it happened again. This time, I could faintly see that the screen was on just very dark because I could see the outlines of the Firefox window I drug over there. Now it happens every time I turn the PC on. It eventually stats flickering and comes on on it's own and stays on until I shut the PC off again.
I also can't even see the monitor's menu when I press the menu button on it. Does this sound like an issue somewhere in Windows, or just a failing monitor? It's a bunch of years old and was sitting in my basement for over a year until I built this new PC. I'm just curious because it worked fine for weeks after I started using it again.
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Nov 12, 2009
I have a dell monitor when I installed Windows 7 on my celeron computer it seems that monitor is somehow disoriented of flickering whenever its opening up. Is this harmful to the monitor? I have an ATI built in video card. I'm just testing win 7 on this computer. I can't wait till finish buying the parts for my new computer.
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Nov 20, 2012
I recently purchased a computer in Sept 2012 from Dino PC in the UK where I live. It has been running very well apart from an irritating red dot problem. My pc has an Intel i5 3570k processor (not over clocked) which has no additional graphics card and runs using the on board graphics HD 4000. I don't play computer games. I have connected my monitor (a Hanns G HG 216D) to another computer to check that my monitor or cables were not at fault and the lines of red dots do not appear.
I have my monitor connected to the pc with a VGA cable but I have also connected my monitor to my pc with 2 different HDMI cables and the red dots still appear. I have also connected my pc to a tv to use as a monitor with a different HDMI cable and the red dots still appear. These red dots didn't appear immediately when I first had the pc. I believe that they began to appear once I started updating my pc with the latest windows 7 updates (x64 bit).
The red dots appear horizontally across the monitor screen each time I switch on the pc at the very bottom edge of the screen (in small columns) then when the Asus screen appears (motherboard is Asus p8z77-V LX) in a single line horizontally across the middle of the screen, then again in a single line horizontally when the windows 7 start up screen appears. They then appear again if I have an image in the centre of the screen which is a dark block.
In this case they are grouped together in a horizontal block about 4 dots high and about 30 dots wide to the centre right of the dark area. The line of dots only appears horizontally and in red on dark screens. Occasionally I have seen the same lines of dots on a light coloured block in the centre right of the screen when the dots are pale blue and in the same formation. If I move the mouse over the red dots when they appear in a centre block of a dark colour the red dots momentarily disappear.
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Jan 1, 2013
I have a Dell laptop & have been trying to use it on a external monitor but its not working. It has worked in the past but now its saying cable not connected on the external screen. FN f8 isnt working for it anymore. Any ideas how to get it working again ?
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Feb 8, 2011
i have a samsung syncmaster 915N that i am trying to hook up to one of my laptops and am having no luck. i have two hp's one is a pavillion dv4, the other is a dv6000. i tried messing with every setting i could find on both computers and can't get anything but a black screen to show up on the samsung monitor. it came from a desktop that crashed so i know it works. i tried the function key that looks like the monitor as well.
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Dec 9, 2009
I have a Thinkpad T61 and just installed Win 7 Professional with an external monitor.
After loading Win 7 i needed to select connect to projector to get my external monitor working. Windows 7 is displayed on the entire screen and all text is nice and crips. No distortion whatsoever.
The problem is the Win 7 Intel 965 chipset family patch. After installing it i loose about 1/2 inch on the right hand side of the monitor. Adjusting the monitor (it has an automatic focus and alignment adjustment function) does not resolve it. I still see that 1/2 inch black border there.
But worse, any text (word document, web-pages, txt files) goes from crips to blurry every 2 inches and the monitor adjustment can't fix it. Removing the Intel chipset patch and rebooting the PC shows Win 7 from frame to frame again (no more black border on the right) and the text is all crisp again.
The monitor driver version that was loaded with Win 7 is 8.15.10.1749. I downloaded the latest driver from Intel 8.15.10.1930 but even with that driver i get the black frame and text distortion back.
Anybody has experienced this before and knows how to fix it? Not using the Intel patch forces me to logon on the notebook (which is in a cupboard) then select connect to a projector again to get Win 7 onto the external monitor. And unfortunately this setting is not retained.
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Jul 8, 2009
Im running 7 on my laptop, and im trying to get it to output only to my external monitor when the lid is closed. I can get it to extend my desktop, but when i close the lid, it turns off the external monitor. I have set Windows 7 to do nothing when lid is closed. Is there anyone else with this problem?
I have an Dell Inspiron 1525, with Intel x3100 integrated graphics, if that helps.
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Jan 15, 2013
I'd ideally like to rig it up to an HDMI adapter, but VGA would be fine as well.
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Sep 29, 2010
I recently installed Windows 7 - 64 bit on my Dell Precision M4400. Now the computer does not recognize any external monitors. It does not detect the external monitor as connected. I tried FunctionF8, and also tried to find if there were missing or outdated drivers and have had no luck.
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Jun 5, 2011
can I make an external monitor the primary with a dell lap top inspron 1501
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Sep 12, 2012
I can't seen to be able to utilize my HP external monitor with my Sony laptop?
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Oct 30, 2009
A friend just bought a new HP laptop running Windows 7 Home. They want to connect their old Gateway monitor to the laptop to use as a dual-screen setup. They shut down the system connected the monitor then turned on the monitor and booted the system. When the desktop displays on the laptop it also comes up on the external monitor for just a second and then the monitor goes black. They have also tried connecting the monitor while the laptop was already up and running with the same results. The monitor had been working fine with their old Windows XP desktop system.
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Aug 30, 2012
I have a laptop which is connected to an external monitor through a HDMI cable.Sometimes when I'm using the external monitor for watching a movie or playing a game I close the laptop lid. If I need to type for a second, when I open the laptop it automatically changes from the external display to the laptop display. This sometimes crashes certain applications and games. I would much prefer if it didn't automatically change my current screen when I plugged in a HDMI cable or when I opened the laptop lid. Is this possible?
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Dec 28, 2011
I 'm looking for easiest possibe way to switch between external monitor/external+internal extended view laptop LCD. Most likely this could be done by Fn+F8 which cycles among internal/external/internal+external (cloned). What I'd need is to cycle between External output only/internal+external (extended) and optionally internal only. So int+ext in cloned mode has no use for me. I know that it can be switched by Win+P which gives to choice whether cloned or extended view, but I'd like to have this changed in the cycle by Fn+F8 from cloned to extened, is that possible?
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Oct 7, 2009
I recently got a 24" 1920 x 1080 external LCD monitor for my laptop. It's awesome. I've been using laptops only for many years and now I'm very sorry I waited so long before getting one. But, on to my issue:
I want to only use the external monitor and keep the laptop screen turned off. The problem is that when I resume from sleep sometimes, but not always, the laptop display comes back on showing only the desktop wallpaper. So I then have to hit the windows key plus "p" (for projector) and select projector to get the laptop display turned off again.
I know how to select the external monitor in Windows 7. Basically, one goes to screen resolution from the desktop right click context menu and make the proper selection under multiple monitors (see screenshot below).
But windows 7 seems to forget this setting sometimes and it's a mild annoyance to have to check the laptop monitor and if it's on, hit the windows key plus "p" each time (or almost each time).
So I'm wondering if there's some way to force windows 7 to remember to use only the external monitor and keep the laptop monitor off until I tell it otherwise? I suppose this issue is likely due to some bug in one of my drivers but I am using all the latest drivers.
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Mar 8, 2009
About 3 seconds after I plug in an external monitor (VGA-out), my netbook LCD screen goes black (backlight still on) and the system locks up. No display on external monitor. I'm pretty sure it's a BSoD (just not visible since it's a display issue). If I plug in the monitor and then boot, windows will go through the loading screen and just before showing the welcome screen, it will reboot (and go through a loop).
What I have tried:
-Removing ACPI driver (only available ACPI driver is designed for XPDM).
-Installing the monitor driver before plugging it in.
-Using safe mode (safe mode will only mirror the display just like it does in BIOS).
-A different monitor.
-Win+P and selecting option just before plugging in.
I'm fairly sure the issue is Intel driver related. I could uninstall the current driver and install Intels XPDM driver and give that a try, but I would lose Aero and there are stability and compatibility issues with the old XP drivers on many 3D applications. Anyone have any suggestions?
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Apr 4, 2011
How do I enable the external monitor port on the T60? Fn+F7 does not work.
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Mar 1, 2011
am trying to install windows on a laptop with broken screen it will not display on crt monitor when running setup.how would i change this. trying to either install vista or 7 hp dv9000 entertainment series
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Dec 11, 2012
Up to the other day my external monitor worked no problem, the laptop sees the monitor but on my external monitor it just keep coming up "no input signal" and going into stand by and I have tried other monitors and other vga leads its a dell latitude e5510,
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Jul 27, 2010
I am dual booting windows 7 and ubuntu 10.04 on a hp dv4 1162 tx laptop and have it plugged into a Benq monitor. That is the only monitor that i use and don't do any dual monitor things.
My dilemma is that this monitor does not show any of the boot screens and that means that i cannot choose which os to boot into. How can i make it show them.
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Jun 19, 2011
How do I stop the screen resolution from reverting back to 800 x 600 when switching to external monitor? Intel(R) Graphics Media Accelerator Driver for Mobile thinks the optimal resolution is 800 x 600 when it's actually 1024 x 768. How do I make it see 1024 x 768 as the optimal resolution and make it the default for the external monitor?
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Nov 2, 2009
Well, running Windows 7 ultimate on a Dell xps m1330 laptop. Everything looks good, but at work I am connected to a matrox triple-head-to-go device which is connected to (3) 22' monitors (3840x1280 resolution). Now when I connected it, ran the nvidia app, it found it and worked great.
Problem is I get home, no external connected, so running off the laptop with the basic resolution, I am trying to start apps (firefox, stickies, etc.) and I guess they were in other spots at work as I don't see them.
I forced a close on FF, then re-started, rt clicking and maximizing which worked, but then other apps like stickies don't have that option. An alt-tab shows it running in the lower right (see screenshot), but there is absolutely no way of getting to the app! I did close the app completely and restarted, but it does restart in a location not on the screen.
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Jan 2, 2010
I got a new LCD tv today and wanted to use it as a monitor as well.
I've connected it up as my main monitor so when its connected via VGA my laptop goes blank and the screen is on the tv.
I was messing with the resolutions to try get the right one and now it says its in an unsupported resolution.
The problem is, I cant change it coz the screen wont show on the tv and its not showing on laptop because i set it not too.
When I unplug the connection I cant change the settings for the external so Im stuck at what to do.
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Jan 2, 2013
I recently got a new monitor (samsung sync master s27b350), and when I connect it to my laptop (alienware m11x r2) it works perfectly fine through either vga or hdmi. Until I close the laptop's lid. Then the image on the external monitor either flickers or goes completely black (I have settings to 'do nothing' on lid close). All my drivers appear as up to date and working, and with the lid open, there is no flickering. I have tried several different cables of each hdmi and vga all with the same results.This didn't happen for the first 3 days with the new monitor, but then the problems started shortly after.
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Nov 9, 2009
I have a dedicated media center that has a old dell monitor (to check settings) and a 42" panasonic HD 1080 television hooked via hdmi. I'm using a combination WMC and Boxee. Problem is everytime I shut down (or just sleep) the external monitor settings >appearnace and personalization>Display>Screen Resolution> mulitple displays goes back to "show desktop only on 2" where I want it to be "duplicate these displays". so I change back and click "keep settings" and it never keeps.
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Dec 20, 2011
I have a virus and trying to get my laptop to work in safe mode, to fix it. But my Laptop monitor is broken so I use an external monitor but now I can't get that to work.
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Dec 25, 2012
I have an Acer Aspire 5741-5979 using a graphics card of Intel (R) graphics. This is a new issue I have had recently. I used to connect an external monitor to my laptop, and it worked fine. The issue is that the laptop still detects the external monitor but the external monitor does not receive a signal when I plug it in the VGA (blue trapezoid connector) have played around with the display options an exhausting amount of times and nothing works there. I tried what worked before (extending the display) and trying to clone it. I thought it might be a driver issue and I reinstalled the driver, but this didn't seem to help either. I have used many monitors when it worked, and also tried different monitors after it stopped working to no avail
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Jul 6, 2011
I am getting a lot of BSOD when my laptop is connected to an external monitor using a display-port cable.The system is fine when I don't use a external monitor and use just laptop screen. External monitor is a Dell 30inch. I have tried different display-port cables, different monitors, tried connecting via vga...still get BSOD, so I am thinking the problem is more on the windows 7/software side rather than hardware.
1. Uninstall AVG free edition 2011
2. Upgraded network-gigabit driver directly from intel instead of Lenovo
3a. Upgraded Nvidia drivers directly from nvidia for Quadro 1000m (ver 8.17.12.7533 - 5/20/2011) - got BSOD within 30min
3b. Downgraded Nvidia drivers to version from Lenovo (ver 8.17.12.6696 - 2/2/2011) - still get BSOD but there is more time between BSODs.
I am using a lenovo w520 laptop, win 7 SP1, x64. 8gb memory, intel 510 solid-state drive, Nvidia Quadro 1000 and Intel HD Graphics 3000, No-Anti-Virus and running zone-alarm firewall.
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Sep 27, 2009
I have an eeepc 1000he with a viewsonic 22inch screen VX2255wmb. I have been using both for a while now with the dual screen setup without any problem. Since a couple days now, my external monitor won't show the optimal resolution which is 1600*1050. In the screen resolution set up page in windows 7,
it used to highlight the optimal ones that respected the aspect ratio of the screen but now it just shows all of them and when I set it up at 1600*1050, I get an error message on the external monitor saying that the configuration I chose is out of range. Now the highest resolution I can use is 1400*1050.
I dual boot with windows xp and I don't have this problem with it. I didnt use any driver for both Os, just plugged the monitor in and it worked.
Anyone has an idea?
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Nov 30, 2011
Basically i've just got my new laptop this week, had desktop pc's for nearly 10 yrs with internal sound card to power a 5.1 surround system now ive ordered some krk rokik rp5 g2 monitor speakers but i want to be able to play music from laptop with media player etc, through the monitor speakers at good sound quality.i no your can get cheap converters, but i imagine a usb sound card with rca outputs would be a lot better yes?budget around �70 or so. heard creative aint that good for music, more gaming, films, and been told m-audio or tascam are good for audio.
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