I just got a brand new ATI Radeon 9550 AGP 4x/8x card 256 MB. I enabled AGP in the BIOS and installed the newest drivers from nVIDIA for my chipset. When I start my system up there's no problem and I get all the way to the WinXP bootscreen. But then I get a 'no signal' message and the screen goes blank. My system itself keeps running. I know it's not my flat panel monitor since it works fine with my ATI Radeon PCI card. I also tried a DVI cable but with the same result. My motherboard doesn't have integrated video so I'm a bit reluctant to uninstall my PCI card at this time. Or could that be the problem? In the BIOS I set my initial Video to Onboard/AGP when I try to get the AGP card to work. Does anyone have a solution?