USB devices disappear after upgrading to Windows XP Pro

[Guest]

After upgrading from Windows XP Home to Windows XP Professional, all my USB
devices stopped working. Windows XP could not detect them. On checking Device
Manager, I found that there was no driver for the USB Host Controller. How
can the driver suddenly DISAPPEAR like this? Even more puzzling is the fact
that the Host Controller showed 3 usb root hubs under it and Device manager
reported that they were working perfectly. How is this possible? Please
explain.

 

[Carey Frisch [MVP]]

Visit the support website of the manufacturer of your computer
or motherboard and download the motherboard chipset drivers
and install them.

If you have an Intel processor and chipset:

Intel Chipset Installation:
http://www.intel.com/design/software/drivers/platform/index.htm

General USB troubleshooting in Windows XP
http://support.microsoft.com/default.aspx?scid=kb;en-us;310575

--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User
Microsoft Newsgroups

Get Windows XP Service Pack 2 with Advanced Security Technologies:
http://www.microsoft.com/athome/security/protect/windowsxp/choose.mspx

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:

| After upgrading from Windows XP Home to Windows XP Professional, all my USB
| devices stopped working. Windows XP could not detect them. On checking Device
| Manager, I found that there was no driver for the USB Host Controller. How
| can the driver suddenly DISAPPEAR like this? Even more puzzling is the fact
| that the Host Controller showed 3 usb root hubs under it and Device manager
| reported that they were working perfectly. How is this possible? Please
| explain.