You did it!

Just my 2 pennies worth.
You may want to look at the BIOS and make sure that the PCIe is set as default (if you are running PCIe). Some boards have integrated or options for display. Some are PCI, PCIe, AGP or on board video. This should really never change once invoked in BIOS. With newer boards, some now offer BIOS changes straight from Windows, so the change could have been made there. Hope that helps.
TK