How to fix exclamation mark on PCI to ISA bridge in Windows
Download the latest motherboard chipset drivers for your computer and your version of Microsoft Windows. Install these drivers onto the computer and reboot. After rebooting the computer, this issue should be resolved.
Once you've determined the motherboard or chipset you have, see our motherboard drivers index for a listing of downloadable chipset and motherboard drivers. Alternatively, if your computer is an OEM (original equipment manufacturer) computer (e.g., a Dell, Hewlett Packard, etc.), chipset drivers are found through the computer manufacturer's drivers page.