USB problem

Archived from groups: microsoft.public.windowsxp.hardware (More info?)

I have an ASUS motherboard with a mixture of USB1 and USB2 ports. The ports
have worked fine until recently when they stopped working.

Device Manager shows all USB devices with a yellow exclamation mark and the
Properties tab reports "The drivers for this device are not installed. (Code
28)".

I have spent hours trying to re-install drivers from the original ASUS disk,
MS site and VIA site without any success.
If I delete the drivers and scan for hardware changes, the USB ports and
controller are discovered and the drivers automatically load with the same
result. Manually installing the same of different drivers results in the
same problem.

I am now tearing my hair out and having to resort to my kids Win98 machine
for USB connections.
Any help will be greatly appreciated.