Troubleshooting Windows XP for Plug and Play – Reinstallation of USB Controllers
If your Windows XP plug and play device is still not working, there are two possibilities. Either the USB controllers are corrupt or the USB ports are bad. In the latter case, you will have to replace the USB ports. But before that, try reinstalling the USB controllers to see if it solves your problem.
Note:If you are using a login password or BIOS password, please disable them before rebooting, especially in case where you are using a USB keyboard/mouse. If you do not disable the login/BIOS password, you won't be able to type the password as the USB drivers will be reinstalled only after the reboot is completed. You can cancel the USB drive uninstall before rebooting by clicking the icon in Device Manager that says Look For Changes.
To reinstall the USB controllers, you need to uninstall them first. To uninstall the controllers, open the Device Manager by holding down the Windows key and hitting the Break key. In the System Properties Dialog box that appears, select the Hardware tab. Then click on the Device Manager Button (first one from the top). In the dialog box, expand the Universal Serial Bus Controllers. You will find it at the bottom of the window.
Once expanded, right click on each of the USB Controller and select uninstall from the context menu. You may be presented with a message saying something about system instability. Ignore the message and uninstall all of them.
Note: Please check the Screenshot above to make sure that you are uninstalling the correct entries.
Once you are done with the uninstall process, restart your computer. All the USB controllers will be automatically be reinstalled with fresh configurations. Once the installation process is finished and Windows XP is ready, insert the plug and play device into the USB port. This should fix the problem of your Windows XP plug and play USB device not working. If your problem is still there, you will have to get a technician who can replace the USB ports on your computer.