ViewSonic VX2025wm 20.1" LCD Monitor Logo
Posted on Sep 17, 2007
Answered by a Fixya Expert

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DVI input on monitor not working

Hi, I recently unplugged my monitor from my main machine (using the DVI) to use on another computer (using VGA). When I returned the monitor to my main computer and connected it using the DVI cable, the monitor was not receiving any signal. Now I can only get the monitor to work with the VGA cables. I have tried several DVI cables and they all do not work (even though they work with other monitors). Everything works fine with VGA cables on multiple computers and not at all with DVI cables on multiple computers. I figure that I must have messed something up with the DVI input on the monitor when I was plugging in the cables or something. Anyway, I was wondering if this is a fixable problem. Thanks!

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  • 3 more comments 
  • thibaut Nov 04, 2007

    Have exactly the same problem. Still trying to solve it :(

  • Anonymous Nov 11, 2007

    Hi, I recently unplugged my monitor from my main machine (using the DVI) to use on another computer (using VGA). When I returned the monitor to my main computer and connected it using the DVI cable, the monitor was not receiving any signal. Now I can only get the monitor to work with the VGA cables. I have tried several DVI cables and they all do not work (even though they work with other monitors). Everything works fine with VGA cables on multiple computers and not at all with DVI cables on multiple computers. I figure that I must have messed something up with the DVI input on the monitor when I was plugging in the cables or something. Anyway, I was wondering if this is a fixable problem.

    Thanks!

  • skidac Nov 23, 2007

    I have also exactly the same problem, I unplugged it once from DVI and plugged VGA in, and when I plugged DVI back it wasn't working in windows, but it gives the picture during POST and boot screen but after that finishes, only VGA works. My monitor is Samsung SyncMaster 731BF, and I have the latest ATI drivers.

  • nikodell Jan 08, 2008

    Same problem but your fix will not work on mine anyone know of a hardware fix? No warranty here.

  • Anonymous May 11, 2010

    I need to know , does the setting First monitor (1) and Second (2) monitor or ext has been done ? If the setting is not been done yet... of course the screen would turn up to be the same.



    Have a try.

    TIA

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  • Posted on Nov 26, 2007
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Contacted viewsonic about this issue- they suggested- have both dvi and vga hooked up to same machine. start with poweroff on both. power on monitor, then power on computer. when you see display coming from the vga, power off pc, then disconnect vga cable, turn off power to monitor, disconnect power cord from monitor for 5 + seconds, reconnect power cord, power on monitor, then power on pc.
If this doesn't work to get the dvi working, (as happened to us) we returned our monitor for a replacement, since it was still under warranty.

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  • Posted on Apr 19, 2008
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Try to reinstall the display card driver . Reboot your system.

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  • Posted on Dec 02, 2009
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Buy a DVI to VGA connector or cable.

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What kind of DVI cable is needed to connect to a SOYO DYLM1988 monitor DVI input with Laptop HDMI output?
You don't say from what to what? Questions like this need
'make model (what it is)' for both items. However DVI is normally a Computer Monitor and there is only one type of cable. When you connect, the monitor see the computer as the source. Sometimes you need to go to the computer Display Settings and select DVI.
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Jan 19, 2023 • Vga Computers & Internet
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Issues with "No Signal Input Check Video Cable" on old monitor
Hanns G HW191D
max reso
note useless for super common 1080P resol.

mon2-undefined-undefined-0.jpg the PC if smarter would scan the old monitor and set to top of my list and work. VESA DDC2B<< Plug and Pray.
that hanns was sold at vga only and vga/dvi
if yours is 2 ports
see page 14 in your manual

HW191D:
Select the ?INPUT SETTING? option to change between analog
(VGA) or Digital (DVI) source. Enter the option and select
Analog or Digital.
[Dual input mode optional

the PC (secret) in the BIOS has rule on
onboard video ports
and PCI-express cards how they work
most today are fixed at auto selection. (video, but...)
so if PCI card is there it wins every time and local VGA goes dead
in the olden days 2000 , we had to set it there to what we wanted.

my wild guess:
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Aug 11, 2022 • Vga Computers & Internet
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What is the best way to connect 2 computers to this monitor
If you have two separate computers for different purposes, such as personal and work use, you may find it convenient and necessary to connect both to a single monitor. Many monitors have dual inputs, making such a connection simple. However, you might need a keyboard, video and monitor switch to accomplish this task if the monitor lacks a second input. Dual Inputs
Step 1 Examine the back of your monitor for the presence of dual video inputs, such as a single VGA and DVI or HDMI output.
Step 2 Connect the VGA cable to one computer. Plug the other end of the cable to the matching input on the monitor. Rotate the retaining screws until tight at both ends of the cable.
Step 3 Plug the DVI or HDMI cable into the back of the second computer. Insert the other end into the monitor's digital video input. Screw down the retaining screws if you're using DVI.
Using a KVM Switch
Step 1 Ensure both computers are turned off. Place the KVM switch on your desk where it is within convenient reach.
Step 2 Locate the video output port on the back of the KVM switch. Plug a VGA cable into this port. Plug the other end of the VGA cable into the monitor.
Step 3 Plug the VGA monitor outputs from each computer into the inputs on the back of the KVM switch. Tighten the retaining screws down for each connected VGA cable on the computers and the KVM switch.
Step 4 Plug the keyboard and mouse cables into their respective outputs on the KVM switch. Plug each set of keyboard and mouse cables from their ports on each computer into the matching inputs on the KVM switch. Plug each cable in sequentially to avoid mixing them up between machines.
Step 5 Double-check that the mouse, keyboard and monitor cables leading from each computer all correspond to the right machine. Plug the KVM switch's power cord into a nearby AC outlet or power strip.
Step 6 Turn the computers and monitor on to verify the connections are correct.

Required Items

  • VGA cable
  • DVI or HDMI cable
  • KVM switch
  • Power strip (optional)


I’m happy to help further over the phone at https://www.6ya.com/expert/arturo_82cd53a2264b6f81

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Jun 13, 2014 • Acer 22" X223w LCD Monitor
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Connectivity card from montior to CPU is different than other PCs, in back side of the monitor its showing to type VGA and other one DVi connector, In my CPU i dont have the slot for the DVi connector,...
DVI ==> Digital Video Input
If your monitor has both DVI and VGA inputs,
and your PC's video-card has both DVI and VGA outputs,
then buy a DVI-to-DVI cable, and use it, for a better picture.
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TODAY AFTER ONE YEAR WORKING PERFECTLY,MY E-MACHINE GATEWAY MONITOR,SHOWED :OUT OF FREQUENCY RANGE AND TURNS BLACK,AND COMPUTER HANGED FOR A WHILE,TILL I UNPLUGGED FROM POWER CORD AND REBOOT IT. WHAT WAS...
If the computer hangs for a while and reoots and then works the monitor, it tells me that the signal to the monitor went dead until rebooting. It is as if you unplugged the monitor from the vga or dvi card, or it was getting an incorrect signal from the vga or dvi card. It may not be the monitor, so much as it is the computer doing this to the good monitor.
One can test to see if the monitor is bad by using it on another computer tower or desktop to see if it does it there. Good luck on this diagnosis.
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LCD Monitors having multiple inputs have option and option to select and switch between the displays from analog (VGA) or Digital (DVI) inputs. Go to the LCD menu and select input source (DVI)

Hope this helps!

CreativeTECH
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How to use my HDTV for a monitor for my computer
Hi,

What video output connection type do you have on your PC.....DVI, VGA, S-VIDEO, HDMI?

What video inputs connection types do you have on your HDTV.....DVI, VGA, S-VIDEO, HDMI?

The cable you need will be whatever connection you have....ie: DVI----->HDMI or VGA----->VGA or DVI to DVI.

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Thanks
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Check pc signal monitor is working fine
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Dvi to vga
You will not benefit from the DVI input unless you have DVI output on your computer. The great advantage of DVI is that the picture is transferred in digital form all the way from your computer to the individual pixels on the monitor. If you only have VGA output on your computer then you will never get a better picture than by using a good quality VGA cable to link that to the VGA input on your monitor.

The DVI plug is designed to carry both digital and analogue (VGA) signals on the various pins, so "adaptors" exist to allow a VGA monitor to attach to a DVI output on a computer. Monitors may also support VGA input from their corresponding DVI input sockets, but the picture quality will never be better than by using a good VGA cable because it is still not using the digital capability of the DVI interface. What's more, because you may need more adaptors and thinner conductors in the cable, you will probably achieve a marginally poorer picture than with VGA to VGA.

When you next buy a PC or a new video card, get one with DVI to take advantage of your new monitor. In the meantime, your best bet is a quality VGA to VGA link.

Sorry that's not what you were wanting to hear, but I hope it will help you avoid further frustration.
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What kind of DVI cable is needed to connect to a SOYO DYLM1988 monitor DVI input with Laptop HDMI output?

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