I have recently decided to add a second monitor to my system. I have not yet received the monitor as I am waiting on delivery. However, I have attempted to install the video card ahead of time. I currently have a 64 MB GeForce 2 MX400 AGP card. I have purchased a 32MB NVIDIA TNT2 M64 PCI card to add to my system. Within my system BIOS I have set my primary display card to be my AGP. When I boot into Windows XP my system recognizes the new card and does not require me to insert any driver disks. After a restart my computer locks up during boot. I have to shutdown my system and during reboot windows asks me if I want to start with my last known good config, I accept. This occurs everytime after installing the drivers. My system successfully boots if I disable the PCI card or if I remove the drivers. With the one good attempt I managed, I loaded windows successfully but my AGP card would only display 16 colors. I was not able to change the color depth. After pulling out the new PCI card my setting still did not revert back to more than 16 colors. After fighting with my system for an hours or so I did a system restore (from a recent restore point in XP) and my display was back to normal. I guess what I am getting at is... has anyone had similar problems? Was this caused by not having the second monitor attached? Thanks!