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No signal sign on booting

When I start the computer it shows'no signal' on the monitor &then goes off.what is the reason for this? How can I remedy this?

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  • 47 Answers

It must be a problem of comp not booting up so make sure you system is setup to boot from cd first, have you got any version of vista anywhere? if not a version of xp? Let me know as this is repairble but you need to be able to access the recovery console

Posted on Dec 01, 2008

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1 Answer

Why does it show no signal when I am trying to sign on to the computer?


Need to know what operating system, and what you mean by "no signal". Did you start the computer and nothing shows on the screen, or does it start to boot up but never gets to the operating system? If nothing ever shows up on the screen, test the monitor to make sure it's working. Some models with not boot if no monitor is detected. If it shows the boot up screen but never the operating system. Press F8 while booting and try to get in under "safe mode" then reboot to see if that gets you in. If not, then under safe mode, scan for viruses and such to see if a malware has gotten in to the system. I suggest Vipre Rescue, as you can boot with it and have it check the system without loading the operating system.

Feb 18, 2015 | Computers & Internet

1 Answer

The Hannspree monitor shows start-up along with my computer monitor,but once it gets on desktop, the Hannspree monitor says "no signal input check video cable", but all the cables are connected...


If you have more than one monitor connection it may be outputting the signal to the other connector.

Try booting into safe mode ( tap F8 key untill the menu shows, use the arrow key and enter to select)

if all goes well restart the computer and monitor should work.

Aug 29, 2011 | Hannspree Computers & Internet

1 Answer

Monitor goes to standby after booting up.( Amber light)


I'm going to guess that your monitor has different imputs and maybe you aren't selecting the right one? There is usualy a button to change imputs on the monitor. If there is no signal and you've checked all the channels, the cable your using might not be functional or your monitor might be broken.

Apr 18, 2010 | HP mx705 17" CRT Monitor

1 Answer

When i power on my pc,the monitor power indicator lights green but about 3s later it goes brown.the monitor screen remains unchanged as to when the computer was powered off.my email is...


You are not getting a video signal to the monitor. The fact that it is green initially shows it's working. When it turns orange, that's an indicator that it is getting no signal from the computer. So the next thing to check is if your computer is actually booting up or if your video card is going bad.
Do you normally hear a beep when the computer starts? Do you hear it now? If the answer is yes and no, then your computer is not starting up. To troubleshoot, I would suggest opening the case and disconnecting everything but the video, CPU, and memory. See if it starts. (you should get a message about no boot device if this happens)
If still no video, you have a hardware problem most probably related to the video card.

Mar 18, 2010 | Dell Computers & Internet

1 Answer

Computer boots up shows windows xp and start up then monitor goes black if i switch it of and on it comes on for a couple of seconds and displays desktop then goes black have tried another monitor same...


Try start up in Safe Mode press F8. Choose Safe Mode, when at the choice window, to select either Safe Mode Desktop, OR System Restore, chooses system restore and choose a time before you had the "Problem" and follow instructions. This should get you back.

Feb 14, 2010 | Computers & Internet

1 Answer

I just go a nw hp 2009m and I cant get it to work it clicks on for just a second then goes off It works fine on my other flat screen hanns g


Is your other flat screen bigger than the hp 2009m? If so, it may be set at a resolution that the new monitor isn't capable of hitting. Try changing your resolution before plugging it back in. That MAY work to help you. If it's not that, then for some reason it may just not be receiving an input signal from your computer. You may be able to remedy this by clicking the " MENU " button ON YOUR MONITOR, and selecting the " Change Input Signal "

I hope this helps you.

Oct 14, 2009 | Computers & Internet

3 Answers

My monitor went black, and the power switch just flashes.


is your CPU working properly? if that the case, your monitor is in need of a service.
reasons for why a monitor goes blank?
Reason 1: Wetness
The number one reason why computer monitors go blank is - wetness. Believe it or not, when your computer monitor is exposed to humid air, sometimes water can condense and accumulate in the monitor. This causes the monitor to malfunction and go blank. I've had this happen to my desktop PC at least three times before. What you need to do is to leave the monitor alone for some time and allow the water to evaporate. That usually solves the problem.

Reason 2: Faulty Graphics Card
The next reason why your computer monitor goes black is due to a faulty graphics card. The best way to detect this kind of problem is to connect up a new monitor to your PC, then check if you have a blank screen. If you continue to have a blank screen, then it's likely your video card is faulty.

Reason 3: Faulty RAM
This one is less obvious and less common, but it can happen. You might sometimes get bad RAM modules which prevent your PC from booting up even to the basic BIOS startup screen. To detect this kind of problem is more troublesome, you might need to remove those RAM modules and insert them into another computer.

Reason 4: Loose Connections
Another reason why your monitor goes blank is due to loose connections. The connection from the monitor to the mains is usually a culprit, as is the connection between the monitor and the video card. Check those connections before you declare your computer monitor as faulty.

Reason 5: A Short Circuit In The Motherboard
And the final reason why your computer monitor goes blank? It's possibly because of a short circuit in the motherboard. This is the most undesirable outcome of course, as you might have to replace your entire motherboard. However, it's possible that this can happen - so keep your fingers crossed and hope it doesn't happen to you.
try this.
please rate my solution.
have a nice day.

Jul 05, 2009 | Dell E152FP 15" Flat Panel LCD Monitor

1 Answer

Dell Monitor comes on but no picture


The monitor isn't getting a signal from the computer, which is why the power indicator goes orange. There are two possibilities:

1) The computer isn't operating correctly. It may not be starting up at all when you turn it on, and you have a "no boot" problem to solve, or

2) The computer is working properly, shows all the signs of normal startup (hard drive activity, Windows startup sound from speakers, etc.). but video isn't reaching the monitor. There may be a problem with the video card (or on the system board if it's integrated video). Or the monitor itself is bad and not detecting the video. You can test this by connectng a known good monitor.

Jan 16, 2009 | Sceptre X9G-NagaIV 19" LCD Monitor

1 Answer

Monitor goes black


Sorry to have to tell you this, but this is common in LCD monitors. The reason that it is going black when it boots is for one of two reasons. You either have a bad power supply that powers your LCD or your LCD's backlight is blown. These can be repaired or you can purchase a new one. But if it goes black 9 times out of 10 is because the backlight is bad. These can be repaired!

Nov 26, 2007 | Acer AL1711 17" Flat Panel LCD Monitor

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