I have a viewsonic vw 2255wmb, and its been working fine. I have it connected to my pc (asusen8800gt graphics card) via a DVI connection. The monitor sits in standby mode and when i turn on the PC up it comes (little blue light turns red and I get a picture). However when I turned it on yesterday the pc powered up but the monitor did not, displaying the message"no digital input" or words to that effect. Idid the usual turn it of check the cables etc but no joy. I then got an old lcd monitor and plugged that into the PC via the same socket but using a DVI-Dsub adapter and an old Dsub cable and it worked fine. i then then disconnected and plugged in the viewsonic in the same way, using its optional d-sub input on the viewsonic and it worked fine also, but obviously not in "digital" mode so the screen is noticably less crisp. I'm going to buy a new cable this afternoon as it's the cheapest place to start failing that i'm lost
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I have the same problem in setting up two displays, a Dell as primary and a VA2223wm Viewsonic as secondary, both connected to an Nvidia geforce 9500 GT. I think it might be the cable, but it's baffling. I have one DVI cable that seems to work on either monitor, and either plug on the graphics card. The second DVI cable doesn't seem to work, but when it's connected to the Viewsonic, the Nvidia control panel detects the monitor as secondary, so I can change settings, etc., but the monitor still says no signal. Each monitor works separately when connected with one cable, but not with the other.
Try to connect to another computer if you have any or laptop if it fine then you have problems with the graphics card if you still face the issue then try to change the interface cable DVI or HDMI which ever you are using . Also if you see it the computer which is the one has problem try uninstalling the graphics driver and reinstall it with the latest release of the driver. Hope you get this tips usefull Thanks and regards Dushyant
First thing I would try will beusing this monitor with another PC using the same the same setup to see if it works OK. We need to narrow down the cause of the problem first since you have three parts that can be bad; Monitor, DVI cable, PC Video card/PC. It is just a process of elimination to locate the problem.
You will need to install the latest driver as well as just inserting the card. Then you need to setup the desktop resolution. If this has been all done correctly, then this indicate the monitor has developed a problem. The ON:Y way to test a monitor is by trying it on another PC, and Vice-Versa, try another monitor on the suspect PC. That will soon sort out, what exactly is faulty.
First and simplest is to simply shutdown the pc, disconnect the analog from the back of your PC and connect the DVI cable to the PC and monitor. When you turn it back on the PC will detect and switch to the DVI.
Second, and better to compare. Connect both sets of cables and go into your display settings, then select advanced options. You should see a GeForce tab in the advanced menu. On that tab there is a multi monitor display setup. Set it to mirror to both screens and apply.
Once it's set switching inputs on the monitor SHOULD work. The problem that makes it a "should" is that both the monitor and the video card have the ablility to sense a connection. So, even with mirroring setup you may have to use the first method as you can't have both connected and operational at the same time.
Give these a try, if you're not sure how to get into the display settings, comment back here with your windows version and I will give you a step by step
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.