I have performed a clean install of Windows 8 pro. I have a Dell T1500 with a Firepro V4800 video card. This machine formerly had Windows 7 installed and functioned with ATI driver. With Windows 7 the three monitors worked without a problem. Now, with Windows 8 installed I can only get two monitors to work. I am using the most up to date Windows 8 driver for the card from the AMD site. The third monitor can be seen on the Screen Resolution page but I cannot "Extend desktop..." over to the third one. When I attempt to do so it gives me a message saying
"The display settings could not be saved. Please try a different combination of display settings."
All three monitors are the same, Dell P2210. I have tried different resolutions. I have tried the driver I was using on Windows 7, I have uninstalled the adapter and drivers multiple times. I have installed just the drivers from AMD with the extras (hydravision, etc.). I have used just the default Windows drivers. I have switch the placement of the monitors on the video card but no matter where I plug them in, only two will work. All monitors are operational. I have even tried different monitors. All of this with no results. I have tried using the Catalyst Control Center. It sees the third monitor but simply shows it as being disabled with no way to enable it that I can see from within the Catalyst Control Center.
This is the final hurdle for me to full use this Windows 8 machine. I am stumped. I have read many other forums. I have heard of this problem with Windows 7 as well so I don't know that it is specific to 8 but very well could be. Again, I had Windows 7
with three monitors with the same card. Help with this issue would be greatly appreciated.
