Have you altered the gfx card in the bios Tony
In bios the initial graphics card is default set to PCI- E [ Geforce 9600GT 512MB] works fine, with two monitors running off that card. Insert PCI card [ Matrox G45 series dual head 32MB ]install 32 bit Vista drivers.Reboot, PCI card not working, error code 43, so still only two monitors on PCI-E working.
Into bios, make the PCI card the initial display, save >reboot................zilch nothing on all three monitors, blank screens all round. Reboot, but enter bios, the system has again set it's self to PCI-E initial display, alter nothing come out, and we are back to PCI-E powering two monitors.
So, close down, remove PCI-E card, alter nothing in bios, reboot with two monitors connected to the PCI card, and there you go it powers up the two displays. So you see bios will find the PCI card once the PCI-E card is removed.
So it proves the PCI card with 32 bit Vista drivers works on Vista, hence no card fault........In fact this cards works alongside a Geforce 7600GT 256MB AGP card, no problem at all, and that is on either W2K Pro 32 bit or XP Pro 64 bit OS's. The Matrox G45 series cards have drivers for all OS's and are a fantastic card compatability wise. They can be used along side either onboard graphics are other stand alone cards.
So as far as I can make out it is Vista that is the problem................the bag of bloated grapical crap exuding bloatware that it is.
I'm sat here with a Intel 4 core Q8200 rig with 4MB Memory with a pass mark score of 3,200 and odd, it eventually boots to login screen.
Press the on button my AMD single core 3700+ with 2MB Memory with a pass mark score of 477, and it flys to the login screen, and that is after it pauses at the dual boot screen for 10 seconds, to seeif I want to boot to W2K 32 bit.
Vista ? my arse.
Edit: And that "Luckypunt " if your still lurking is how you relay PC problems, to fellow members. It gives them a understanding of exactly what the issue is, and what measures you have already taken to fix it.
Coming on the board with an attention grabbing
HELP Little Miss important here, I've put the restore CD in my CD drive and now my PC won't work..............and now I'm p**sed off because you lot have not sorterd it for me, so only reply if you can sort it......................is not how it is done.