I confirm the PCI slot on the Intel(R) Desktop Board D410PT is PCI revision 2.3-compliant and available for 32-bit/33MHz add-in cards using 5.0V signaling. However, please, know Engineering has indicated that specifically PCI video cards are not POR (Plan of Record), which means it is not intended to work as part of the design (they are not validated and/or supported). So, these type of PCI cards may or may not work. A couple of hints are the following, though:
1. Make sure "Expansion Card Text" option is enabled. This is found in BIOS, under the "Security" tab.
2. If the problem continues, update the BIOS to the latest version: