Posted 26 October 2010 - 08:33 PM
I've got a new Dell XPS 9100. I was told by Dell support that the video card would support 3 monitors, but have since found that is not the case. I have spoken with Dell support but cannot get a good response. Today, for example, they pointed me to a video card that they said supports three monitors but supports two. In XP, supporting 3 monitors required only another video card. With Windows 7 it seems more complicated.
The short question then, what is the best way to connect 3 VGA monitors in Windows 7?
The longer question ... I am working in a business setting, so I'm not speaking of a video game displaying across the three monitors. It's more a matter of the Web on one monitor, Email on another, and Word on a third. I have a PCI-e ATI Radeon HD5670 1GB GDDR5. It has a VGA, DVI-I, and HDMI port, but we suspect the HDMI port mirrors the DVI-I. I don't have another PCI-e port. I have a PCI port, some AGP ports, and one other (can't recall). I bought a cheap PCI card without considering the drivers available. That failed; the third screen flashed every second. I returned the card. I then did much more research, and identified a card certified compatible with Windows 7 by Microsoft. That was a GeForce 8400 PCI card. Dell couldn't find it on the web, but I can promise it was a PCI card, and appropriately installed. However, I got a "PCI-to-PCI bridge" error, with code (10). Lots more web searches suggested to me that that problem was more mysterious than I was in the position to deal with. We will return that card tomorrow. So now I'm left with two monitors nicely linked using the card that came with the computer, and the third monitor sitting unused. It's like my life is one-third dark ...