Hello,
I have system using an Asus P4P800-E Deluxe motherboard onto which I recently installed Windows 7. This motherboard has an Intel 865PE chipset with an ICH5R south bridge. Older USB 1.1 devices seem to work fine, however my newer USB 2.0 devices fail to install correctly.
This includes a 1GB USB Flash drive. When I plug it in, I see the 'USB Mass Storage Device' entry appear in the USB section of the device manager, but shortly after that it updates with a yellow ! next to it. No drive letter is ever assigned, and the device status is 'This device cannot start. (Code 10)'. This happens whether I plug it into the front or rear USB connectors.
I have read numerous places that recommend disconnecting all USB devices, uninstalling all of them from the device manager and rebooting. This I have tried several times with no success. I do not have Nero or any squirrelly software installed either, and I have used regedit to check for possible Upperfilters and Lowerfilters, but it seems clean.
My theory is that the motherboard chipset drivers are not installed and it is running on a generic set of drivers, but running the intel INF update utility doesn't seem to help, which can be found here:
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProdId=816&DwnldID=18494&lang=eng
I have run that several times, using 'Run As Administrator', but nothing seems to change. I am unsure whether or not it is actually installing those drivers. More troubling is the note on that page that says that it will not update the USB drivers anyway. I have tried looking for specify USB drivers, but have not been able to find any.
Does anyone have an idea of what might be going on? Or where to find USB drivers? Or how to verify that my attempt at updating the chipset drivers was successful?
Thank You.

USB 2.0 Driver for Windows 2000.
USB 2.0 Driver (readme) for Windows XP.
Windows XP USB2.0 Driver Installation
Please using Windows XP SP1 (Service Pack 1) or later versions, you DO NOT need to
install this driver, because they already contain software support for USB 2.0.
Windows 2000 USB2.0 Driver Installation Guide
Introduction:
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This driver only works with Intel ICH5 chipset & Windows 2000.
Installation:
-----------------
Note: You must go through all below procedures to complete the driver installation.
1. Click Windows [Start], then move the mouse to stay on [Settings].
2. Click [Control Panel].
3. Double Click [System].
4. Click [Hardware] tab.
5. Click [Device Manager].
6. Right Click [Universal Serial Bus(USB) Controller] under [Other Devices],
then click [Properties].
7. Click [Driver] tab.
8. Click [Update Driver].
9. Click [Next].
10. Choose [Search for a suitable driver for my device].
11. Click [Next].
12. Choose [Specify a location] under 'Optional search locations'.
13. Click [Next].
14. Click [Browse] to specify the file path where the driver is,
e.g. '{CD-ROM}:DriversUSB22KEHCI Package'.
15. Click [Next].
16. Click [Finish].