Some OEMs may permanently map an I/O range of 03F8 - 03FF to a COM port on a PCI card in their BIOS, so developers can debug applications and drivers on a legacy-free system.
If you install a PCI legacy card before installing Windows XP, the installation may be delayed by up to 3 hours.
To workaround this behavior, do either of the following:
- Remove the PCI card, and insert it after the install.
- Disable the PCI slot in the BIOS, and enable it after the installation.