Try going into the system BIOS and find where it asks about what graphic type you would prefer to use. In my experience, motherboards using dedicated video cards but also have integrated graphics set that option to Auto by default. You should be able to set that as PCIe. That might help.
If you have the latest drivers installed, perhaps you could try a roll back via windows device manager. If all else fails you can drop a small amount of money on a Soundblaster Audigy SE.