Monitor Says Input Signal Lost And Then Nothing Happens
Mar 3, 2011
Starting today my computer has been randomly turning itself off, although running lights are still on, and the computer sounds as if it is still running normally.Essentially what happens is that it crashes out, the monitor says input signal lost and then nothing happens. First two times it crashed whilst using Photoshop. Third time I installed a program to monitor the HDD temp. It was running just over 40c when it crashed again (had a low end game running to see if the HDD temp would rise). I waited 30 min before turning the computer on each time.Opened the case to check for any build up of dust, it seemed fine.I have also checked that all the cables are plugged in correctly.Also definitely something wrong, because holding down the power button didn't turn it off. Had to turn the computer off by the switch at the back of the computer.Only thing new with the comp today was updating Microsoft.Net framework, a few hours before the first time it crashed.
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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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Sep 2, 2011
ive got a problem with my new viewsonic vx2753mh-led monitor. its got 2x hdmi inputs and one vga.the vga works straight off the bat, but whenever I try and plug the hdmi in it just says no input signal detected and goes black I noticed in device manager that this was installed as 'generic non-pnp monitor' so after jumping through some hoops i managed to install the driver as 'viewsonic vx2753 SERIES' anyway this doesnt seem to have made a difference. still no input through the hdmi.I have tested to cord on my samsung tv and it worked fine so it can't be a problem with the cord or the graphics card....just some general info that might be of use:
windows 7 x64
dual monitor setup
the graphics is integrated on the intel i5 chip my display adapters in device manager says Intel(R) HD Graphics Family.it has a dvi out, hdmi out, and vga out.
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Dec 29, 2012
I have a Toshiba Satellite A665-S6086 laptop which had to be re-imaged back to out of the box status. Before the re-imaging, the Realtek audio controller had a mixer panel in its device manager, and on the system volume control, that allowed me to record from the mix of audio going to the speaker (labeled "stereo mix" ). Now, I find that the ONLY recording device that EXISTS is the physical built-in microphone; I just recorded a streamed radio program, and it was basically recording the room noises and, very faintly, the audio from the speaker. That was how I discovered the change in software environment. I have tried downloading the driver from the recovery partition; it installs but does not correct the problem. I have tried uninstalling both audio devices and letting them reinstall on restart. I can play audio to the speakers, but not record the audio internally.
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Jul 30, 2011
I have an hp a6403w Intel m board .I keep getting no input screen on monitor.So far i have put in a new video card.. New power cord no help.tonight i bought new 750 watt power supply no help.I have pulled out memory chips powered cpu on get beeps put back in no help.I have tried onboard video no help. I have tried to pull out power cord holding power button on for 60 sec plug back in. you guessed no go. all lights come on cpuprocessor fan are working ovideo card fan runs.
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Jul 11, 2012
We just bought a Hp Pavilion p6-2133w, we hooked it up to a sony monitor, we had to hook them up with a adapter that takes the dvi-d from the computer and adapts it to vga for the monitor. The problem is the monitor doesn't act like it is reading the signal.
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Jul 1, 2012
lost video moniter goes to sleep will not come back up with reboot. computer fans are running but no video. video card is ati radeon hd 4200.
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Jan 12, 2012
My new PC with windows 7 won't detect my old Acer v243w monitor. I was hoping to use dual monitors, with this monitor connected via vga into the motherboard and my other monitor connected by DVI into the graphics card. The graphics card I am using is a Radeon HD6870. It has DVI slots and an HDMI slot but no VGA slot.
Even when the Acer is plugged into the motherboard by itself using VGA it does not get detected then either.
Is it simply a case of getting a lead which will convert my VGA lead from the Acer monitor into a DVI output which I can then plug into the graphics card?
Or perhaps there is a way of enabling VGA support, maybe via the graphics card or something? It seems odd to have a VGA socket in the motherboard if it is not going to work.
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Nov 29, 2009
I've just built a new computer with Windows 7 and a gigabyte brand radeon HD4890 and have been having the same issue as some other users with regard to the over/underscan.
I managed to correct the inch or so of unfilled space when displaying the desktop by using the under/overscan utility in CCC (thanks to info on this forum ^_^) but found that the problem still exists when I ran my first full-screen applications.
I installed, updated, and ran Spore: Galactic Adventures to take a look at how my system was going to handle everything, but found that the dreaded inch was back. The really odd thing was that when I switched Spore to windowed mode, the inch had gone and I could maximise to full-screen. Of course, the window header and taskbar kind of detract from the game, but this isn't necessarily an issue for Spore (which can hardly be described as immersive).
I am, however, concerned that this issue may pop up in other games where the window header and taskbar will detract from the game (if it operates well in windowed mode at all).
I plan on investigating further later today, possibly in the direction of motherboard and chipset drivers, but also testing with other games.
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Jun 18, 2012
Alright so it worked when I left to go pay a bill. Come back and it has no signal. I tried the PC on my TV to see if it worked and it does no problem, so I know the PC is not at fault. Tried a DVI cable and a VGA. Tried restarting and powering off everything.
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Dec 16, 2012
i read the manual and followed the instructions as best as i could but when i was done and hit the power button, everything turned on except i I'm not getting any signal on my tv. Im using an HDMI cable i'm guessing thats the problem but I'm afraid to go back and try to fix anything. I also noticed a red LED go off as soon as i hit the power button but it never lights up again. (Only once) I think its my motherboard. Also, i tried turning it on about times and the last time i turned it on, my fans connected to the motherboard were no longer turning on. Im afraid i might've burned my motherboard. Here are my specs:
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Dec 25, 2011
I have a eMachines ET1300-2 (yes, I know, emachines aren't great) running Win7 Ultimate.Specs: Newegg.com - eMachines ET1300-02 18.5" Desktop PC Athlon X2 4850e(2.5GHz) 3GB DDR2 160GB HDD Capacity NVIDIA GeForce G100 Windows Vista Home PremiumA family member shut it off last night but this morning it started once or twice but stopped sending signals to the monitor part way through each time. The other times I started to run it, it doesn't display any BIOS or anything, and it doesnt seem like anything is runnin except the fans and lights.I got it into safe mode initially at one point, but again, the signal to the monitor cut out and I have no idea what happened after that.Each time I power-button-ed it off.Things were running fine until recently; I did install AirDisplay (forgot there was no wifi - I'm used to my laptop which does).I think it is expected, but I tried to put in the recovery CD to boot from CD, but, of course, nothing displayed.
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Feb 6, 2012
I just upgraded my AMD catalyst software to 12.4 on my HTPC. Been noticing that when I am viewing via my Sharp 19"LED TV I get signal cut out after about 20 minutes. I notice this when my screen save comes on in WMC. It eventually craps out and I get "no signal" messages on my screen. It comes back if I simply click on the mouse.This never used to happen before. I could leave the HTPC on over night and simply turn the TV monitor off. When I would turn the monitor on in the morning, the Desktop would be visible.Are there new settings in 12.4 that could be causing signal cut out (i.e. like an energy saver option)?
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May 8, 2009
I am experiencing a very disturbing issue with my newly installed ATI 4870 and my Windows 7 RC (7100). Prior to installing this card I had the following setup, which worked flawlessly.
nvidia 8800gt
intel p35 chipset in the motherboard
Samsung a656 40" LCD connected via a DVI to vga connector.
When I got my 4870, I uninstalled the nvidia drivers,rebooted, installed the latest (9.5) ati drivers and rebooted.
Then, I got a no signal in the monitor at the windows login screen.
Mind you, that when I (dual) boot in Vista, using the 9.4 drivers, everything is fine.
Things that I tried:
1. Creating a new monitor.inf file (located at the windows folder) using info from a post in this forum.- This should not make a difference, since I was using the same monitor.inf file in the same windows 7 installation, whitout any issues before I installed the 4870.
2. Changing the ATI .inf file to include only one resolution for the r7x cards 19 20 10 80 00 00 00 60- I think it sould be a refresh rate issue, since the vga port of the TV supports many resolutions, including 1600x1200 etc.
- It could also be an unsupported resolution, if the ATi driver cannot detect the monitor correctly.
3. Installing the windows 7 default ATI driver.
Things that I noticed:
1. I can login only in safe mode.
2. Low res mode (640x480) gets me to the login in screen, but as soon as I input my passowrd, I get no signal.
3. Changing DVI ports in the 4870 (it has 2)
Does anyone have any ideas?
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Feb 16, 2012
This morning I was on facebook, playing games, and the computer crashed. A blue screen popped up and gave an error but was gone before I could read anything. I have replaced the video card and the power supply
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Oct 15, 2012
I added speakers to my computer and now I have this message on my monitor "HDMI NO SIGNAL" Everything seems to be working etc. I can get on the Interenet, play viedeos, email and all software is useable. How do I get that message off of my monitor?
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Dec 8, 2012
I have a brand new custom built computer. I assumed that I could take a cloned drive of my old computer and install it in my new one. Well, I took the hard drive from my new computer and installed it in an external drive case and cloned to this drive using Acronis clone tool. Then I installed the cloned drive back in my new computer. Now no signal whatsoever to the monitor. My monitor is good as I tried my old computer with it and it works fine. I hope I haven't done major to my new computer
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Feb 27, 2011
On the right hand side of the taskbar I have the icons for battery life, volume, internet connection, etc. When I used to put the mouse over the internet connection it would show me who I was connected too (SSID) , signal quality, and speed.I began having some issues so I had to remove my Netgear connection and then reconnect.Ever since I did this all that shows up now when I put the mouse over it is now only says: Netgear and Internet access.How do I get the information back. It shows up on my desktop, but not my laptop.
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Sep 19, 2012
Its my own configured desktop with 2GB RAM, core2duo processor, 2TB HDD . Earlier I used to get BSOD error but it has been stopped now.. but started giving new error. Monitor turns black showing no signal msg on display, PC get restarted 2-3 times and then only get started. After staring it'll show message that, "Windows has been recovered from an unexpected shutdown" and shows problem details as
Problem signature:
Problem Event Name:BlueScreen
OS Version:6.1.7600.2.0.0.256.1
Locale ID:16393
[Code]....
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Sep 1, 2011
Sometimes when I turn on my computer although computer starts but the monitor doesn't show anything. I unplug the power cable from back of computer and then replug it and after that monitor starts responding (it starts showing desktop), how can this problem be fixed.
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Oct 22, 2011
Got a PC with Nvidia GeForce 6150 graphics card with no overclocking. Sometimes the monitor loses signal and does not work. Sometimes it works just fine. I've tried different VGA cable and different monitor, situation didn't change. I've got 4 different connectors.
- 1 VGA and DVI on Nvidia
- 1 VGA and DVI built in into motherboard.
Sometimes, when the Nvidia doesn't work, I connect to built-in card and monitor starts working. Next time when it's out, I connect back to Nvidia. There have been situations when only one of the four connectors is working. This means that on one graphics card there may be only one connector which is functioning. I don't get this. Problem isn't in the display nor the cable. It also doesn't seem to be in the graphics card as the built-in connectors aren't fully functional neither.
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Oct 30, 2012
My problem is that if I connect the computer via DVI to a display it functions normally, but when I hook it up via HDMI to my Flat screen, it doesn't show the splash screen that gives you the option to enter bios. The screen just stays black until the windows welcome screen(win 7 64bit) comes up, then it acts totaly normal from that point. When I try to press the del key during the boot, I believe it is entering the bios, but the screen remains black so I can't see anything. I am guessing that the MB is not sending the signal to the Flat Screen until it loads windows, but can't find out anywhere that confirms that or what to do in order to resolve it.
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Jan 24, 2013
my computer tower turns on but when i hook up the connection cord with the monitor it says that there is not a signal.
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Nov 27, 2009
I have a white box tower with a ASUS P5KPL-CM Motherboard I turn it on and I get a black screen, no signal to the monitor,so I plugged in my old Sony tower and the monitor works. So it's not the monitor or the cable( switched them a few times by now) I believe it is the new tower. I think it might be the VGA card but know little about these things. Manual says it is a Intel Graphics Media Accelerator (Intel GMA 3100).Or could it be something else? By the way I have Windows XP if that makes a difference.
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Aug 10, 2009
I turn on the computer, goes past the bios screen as normal, does the windows loading screen as normal, then the screen goes black and the "No Signal" message is displayed.
Now, here is why it is different. I type in my password and press enter, without being able to see and wait for the logon sound to play, then if I unplug monitors cable, I hear the noise of windows telling me a device has been disconnected, I plug it back in again the device connection noise then plays and low and behold, there is the desktop.
I have been running Windows 7 build 7100 for roughly about three weeks until this started happening about one week ago.
MONITOR: ViewSonic VX1932wm
GPU: Sapphire HD4850 512mb
Also, I have noticed too after logging, randomly Aero will disable itself, I have to open the 'Personalize' option and run the troubleshoot to get it to fix itself again.
I assume this is the correct section, as I am experiencing visual issues. Apologies if this is not the correct section.
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Aug 23, 2012
I encountered a new issue with my PC and I sincerely don't know what to do. In fact, after a while, the monitor is showing no signal. I changed the video card with a brand new one and still my PC will do the same. Is there a worm or software issue or the motherboard miss-fires?
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Sep 25, 2012
When I start my computer with drivers installed my monitor loses the signal when I should be receiving a log in screen. I can boot up fine in safemode and/or if I'm using Standard VGA Graphics Adapter. To my knowledge I do not have an onboard graphics card as there is nothing to plug an avi or vga cord into aside from my graphics card. I should also mention I tried using an NVIDIA GeForce 8500 GT and experienced the same problem.
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Nov 5, 2009
Anyone come across this? I have a brand new pc, its nice and fast, installed Windows 7 a month ago and the ATI drivers that were available then.
Now with the lastest update for ATI, my monitor loses signal midway through the install of the new pack and I have to restart my pc to do anything.
I have tried different versions of the drivers, uninstalled my previous drivers and tried to install fresh but no dice.
Any ideas?
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Dec 5, 2009
I have used the search feature but it seems like others are having different problems with the 6200 than I am.
Whenever I install either the Default Windows 7 found driver or the Nvidia 195.62 Driver for my 6200 video card my system boots up, shows the Windows 7 startup screen and then the screen goes black like I had unplugged the monitor, the only way I can get video back in normal mode is to go into Safe Mode and disable the Video Card.
I've seen that it might be a refresh rate issue, but it won't let me change the refresh rate, the only option I have is "Use Hardware Default Setting"
Here are my system specs.
- HP m7350n Media Center PC
- Windows 7 Ultimate 32 Bit
- Motherboard: Asus P5LP-LE
- Video Card: Nvidia 6200SE TurboCache
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Sep 5, 2011
after hardrive died a6417c hp installed hardrive (up the drive to 1 tb western black and windows 7 ) sound system works except no sound display on screen.
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Jun 1, 2012
i just recently built a new gaming rig and am running an SSD for boot up.
Everything turns out just fine except when after the windows logo appears, I can hear a little crackle noise from my headphone then the monitor loses signal and my g15 keyboard LCD turns off, then a few moments later my monitor and keyboard comes back to normal and i am a the login screen. It is not a big deal but am just puzzled at why it would do this.
It does slow down my boot speed by a lot especially for an SSD. Anyone know how i can speed this up? Someone told me disable USB 3.0 to speed things up. Any problems with Asrock MOBO drivers that could affect this?
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