multicam

First post, long time reader. I am building a geovision based system (not my first). I am having problems with the geo drivers. Geo installer says that they are installed, but windows tells me that they are not there. I have tried 3 different 1120a cards and 1 1240a. The cards do work in other machines. I have deleted all drivers, all geo*.ini files and software. Tried different PCIX slots. Please help or offer a suggestion that might put me on the right track. Any help greatly appreciated. Mobo Intel DH55TC CPU i3 RAM 2 dimms of OCZ 2GB OS XP Pro SP3 HD(os) 160GB HD(cam data) 1.5TB HD(cam data) 1.5TB HD(cam data) 1.5TB HD(cam data) 1.5TB Power Sup Diablotek PHD 750

Rory, thanks for the quick reply. I've learned a lot on here over the last few years. The card does show up in device manager, but with out drivers loaded(yellow exclamation point) I had checked the power, its fine. 12v and 5v I'm sitting on 3 of the boards. I was wanting to use the HDMI output to take use of the 52" my client is using for monitor. Any suggestions on proven i3/i5 mobos? I can do w/o HDMI output.