New installation of Win XP SP3, all Dell drivers downloaded & installed, all Windows updates applied.
USB hard drives and memory sticks give a 'Device not recognized' error in any USB port. Show as Unknown device in Device Manager.
USB mouse, keyboard, webcam all work fine in any USB port.
USB drives are recognized fine in Ubuntu after booting with a Live CD.
Uninstall Unknown device in Device Manager, remove usb stick, shut down, unplug computer, then restart
Reinstall chipset drivers (re-run setup with the -overall switch)
Registry edit as suggested at http://suport.microsoft.com/kb/925196 - remove UpperFilters and LowerFilters Registry values.
Suggestions for what to try next welcome...
I manually edited the registry keys - I was familiar with the UpperFilters / LowerFilters issue causing problems with reading DVDs.
Running FixIt from suport.microsoft.com/.../925196 does not help, it only recognises, and offers to fix problems with, the installed DVD/CDRW
Additionally, the Dell on-line diagnostics does not detect the problem with USB drives, which is also fail to be recognized in Safe Mode.
A bit of further information, I've tried a USB card reader which works fine. It's recognised, drive letters allocated and inserted cards can be read with no problem.
So the 'Device not recognised' issue is ONLY related to USB memory sticks and USB hard drives.
...and, both USB sticks and USB hard drives work fine when connected to the computer via a USB hub!
So the 'Device not recognised' issue is ONLY related to USB memory sticks and USB hard drives that are plugged DIRECTLY into the USB ports.
I'm stumped on this one...
Yep, that's a good one.
What I would do is delete all USB devices from device manager and reboot. You could also try updating your chipset drivers.
Please post back and let me know if you need more help.
Deleted USB devices from Device Manager last night - have to be careful with the order of deletion as mouse and kbd are both USB and there's no PS2 ports. Tried both with and without a USB HD connected. Doesn't fix the issue.
The chipset drivers are the latest from the Dell download section, I already tried re-installing them. I've also tried the Intel Driver Update Utility www.intel.com/.../detect which updated the video driver but reported that the chipset drivers were up to date.