Enterprise Server Strategies for the CIOI just used the "Windows XP home edition" upgrade to upgrade from "98se".
Since I did this, COM1 and the 2 Universal Host Controllers are conflicting. I now have no USB
ports. I'm not using the COM1 for anything. I tried changing the IRQ from the properties window for
COM1, but my choices are "Basic config 0000-0007", and that only switches between IRQ 3 & 4.
IRQ 3 conflicts with COM2, and IRQ 4 conflicts with the 2 USB Universal Host Controllers. What
happened, and can you please tell how to fix it?
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You have a driver conflict. Go through Device Manager and delete/remove/uninstall every USB
and COM port driver you see. Then when the system reboots and re-detects them, be sure to provide a
path to the newest drivers from XP's CD. If that fails, perform another upgrade install. This may
repair the issue as well. If that all fails. Use the Files and Settings Transfer Wizard to backup
your data files and personal settings, then perform a clean install of XP and restore your data
from the backup.
This was first published in January 2004
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