Want To Add 3rd Monitor To Windows 7 PC.
Posted on 2014-12-22
Hello, We have a user with an add-in graphics card on a Win 7 Pro X64 PC. She has 2 monitors being serviced of that add-in card. We want to add a third monitor. The initial attempt to install the 3rd monitor was met by failure. So, for several days, I have been working on other ways to configure a new 3rd Monitor: researching issue on the internet, trying a variety of cable changes, graphics card changes, driver changes, use of specialized hub/connector and configuration changes. Most of my testing has been on another PC, so as not to impede the user's productivity.
I have found various technical articles indicating it is possible. Including numerous instructional videos. Most were for laptops and not desktops. While informative, they have not led me down the path to success.
As it now stands, there is no way to get this to work, which seems due to existing hardware limitations. it seems, a 3rd monitor might work if:
1) The add-in graphics card supports 3 live monitors. The one currently installed in the PC and test PC does not. Having difficulty finding one that specifically does support 3 live monitors. Even those with 3 connectors can only run 2 live at once.
2) The PC has 2 identical add-graphics cards, running the same driver. This is probably not possible, since almost all of the PCs we have purchased have only 1 PCI-Express slot, which will not allow for another identical graphics card. I have test with 2 graphics cards ans WIn 7 does not even allow using them with just 2 live monitors. Windows just won’t allow both to be used.
3) We purchase a new higher end PC with the needed graphics support supplied by the vendor. This is questionable at best. Unwilling to do this without guarantee it would work.
Please advise. Thanks