I have built a dual boot dn2800mt system booting both 32 bit Windows 7 and Windows XP. The 82574L network connection operates properly when running under Windows 7. Under Windows XP SP3 the Intel ProSet diagnostics return the error: "This adapter does not have link." Also, the cable quality test will report a bad cable in certain hardware configurations and a good cable in other configurations. I have tried several different cables and different pairing devices (10, 100 and 1000 Mbit speeds) but have never achieved a link under Windows XP. I am using version 126.96.36.199 of the Intel ProSet driver. I can connect a cable, boot to Windows 7 and have no link problems. I can then boot to Windows XP with no other change and fail to achieve link. Anyone have a suggestion as to what to do next? As far as I can tell I'm using both the latest bios and the latest Intel system and ProSet network drivers.