In the past I have been very happy with the following quad monitor set up:
Foxxcon A7GM-S 780G chipset with HD 3200 graphics
Phenom II X2
windows 7 x64 build 7600, legal
1x HDMI via motherboard
1x VGA via motherboard
1x DVI via HD 4830
1x DVI-to-VGA via HD 4830.
Recently I changed the videocard from the HD 4830 to a HD 6850.
I cannot connect 4 monitors anymore. The device manager is giving me a CODE 43 error on the HD3200 when I have all screens connected like i used to (2x IGP, 2x GPU). The two monitors attached to the graphics card work when I boot. When I unplug the external power supply to the GPU (so this shuts off the GPU), then the 2 monitors that are attached to the motherboard work. Both ways they work with installed drivers; ie the resolutions are native and there is 3d acceleration. Of course, the IGP delivers a little less FPS then the GPU.
In bios surround view is enabled, IGP is enabled, memory is set to auto.
If I disable IGP or surround view in bios, then the HD 3200 no longer shows up the device manager. My gut feeling is that there is some problem with x64, though it was supposed to be easier in windows 7 to have multiple display drivers.. I've also thought about it being a DX11 vs DX10 problem, though i haven't been able to install just DX10 drivers (the HD 3200 is a DX10 core). I have tried first uninstalling all graphic drivers, then letting windows auto install first the HD 3200 or first the HD 6850, but nothing worked.
Oh, and I know i can use the ``display port'' to add another 3 screens, but the 3-way connectors are extremely expensive.
Using the display port and chain linking two screens would be a solution as well, but I dont have display port screens.
Basically, I NEED surround view to work. Adding a PCIe x1 card is not really an option, the slot is broken. I have a PCI slot left, but plainly I dont really want to spend MORE money when Surround view plainly should work.