I have just purchased a used computer and it will not send a signal to either monitor that I have. It has an Intel D845HV mobo, Nvidia Geforce2 MX 100/200, pentuim 4. I first hooked it up to my new monitor which is an HP w2408h LCD and it worked but then i turned off the computer because the keyboard would not work and after turning it on again, the monitor displayed that the VGA and HDI was not receiving a signal. So I then hooked up my old tube monitor to it and it also doesn't work; says ''Video cable connected?'' I know the Nvidia video card is ok because I took it out and put it in my older computer which works fine with its tube monior. So, with this newer computer I cant get to the desktop or even see it first boot up to use the F8, etc commands. Any help would be appreciated. TY
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Check your computer to make sure it is actually sending out a signal. You can do this by hooking up another working monitor. If the other monitor works, there maybe a problem with the original monitor and it may need to be sent for service repair.
The message it is displaying indicates that a VGA cable is connected and is not sending signal, or is sending a Monitor Off signal across the VGA cable. The motherboard battery will have no impact on this. If you are using something other than a VGA cable to send the signal to the monitor, then you should ensure that no VGA cable is plugged into the monitor, or the source on the monitor is not using the VGA connector.
If the monitor works with other computer then the video card in the computer where the monitor does not work is bad. You need to replace the video card. If the video card is on the motherboard, just replace it with a video card that fits into one of the PCI slots. If you were using VGA then purchase a PCI VGA Video Card.
Connect the monitor to a different computer, to see if the monitor works at all.
Connect a different monitor to your computer, to see if your computer really is "sending" a video-signal through the "data" cable. If not, then either the data-cable or the video-card inside the computer is faulty.
It's not your monitor. It's your computer. If you see a display on the monitor, it means it's working. (and you do) Your computer is not sending a signal to the monitor. If you are working with a laptop, you can just press the Fn key/special function key combo to send the signal to the external monitor. If you are using a desktop, then you need to do some troubleshooting.
If the monitor is black either the computer is not sending signal to the monitor or the monitor is getting the signal and its broken.
1.) does the old monitor or another monitor work with the computer you have. if yes your monitor is prolly broke since there is not much to a monitor they automatically detect signal as soon as its turned on.
2.) if the monitor doesnt work the old one then your computer is the issue and it can be a lot of things can cause no video
please test the power source that the computer is plugged into and confirm it is working with a lamp or something.
If power source is confirmed working and the computer is plugged in and it is turned on and there is still no signal to the monitor and the ethernet lights are not on when the cable is plugged into it. Also check that all cables from the monitor to the computer are connected properly and secure. if the above has been done and still no signal then there are some Possible Causes
1. Mother Board failure (video card on motherboard is defective)
2. Monitor Failure (computer is sending video signal but monitor can not process it)
3. Video Card failure (if the video card is not designed into the motherboard)
Troubleshooting and repair
See if you can get access to another monitor to test the computer with to see if it sends he video signal ok to that monitor. If you can not get access to one then the only option is to get a video card and either you can install it yourself, or have it installed at a repair station.
If you purchase the card and install it yourself most stores will let you return the cards if they do not work or they are not usable. If you do go that route just make sure to ask about return policies prior to trying it.
I would really consider replacing the video card first you can get them from 30.00 and up and there is ony a few screw to remove to install them. Most of the video card manufactures also have tech support for helping people with the installations of the cards.
I would not worry about the lights on the modem or network card until the monitor issue is resolved so you can then see if it is indeed making a connection to the internet.
Check cable connections. Check using a different monitor.
The only other possibility is that you're trying to drive it with a signal that is beyond the capability of the monitor. But the computer boot-up (BIOS) screen won't exceed the monitor's capability.