Trouble installing usb controller

On a customers machine the usb ports no longer work.  There are question marks and exclamation marks in device manager for the usb controllers.  I connected a pci usb card and the same result.  Suggestions?
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oneononecompAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Try uninstalling the USB ports in Device Manager and allowing Windows to reinstall.  You may need to download chipset drivers from the manufacturer's web site for Windows XP.
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nobusCommented:
you can check if it is a hard, or soft problem, by booting from a linux live cd, and test the usb :
here a Knoppox live cd
ftp://mirrors.kernel.org/knoppix-dvd/KNOPPIX_V7.0.5DVD-2012-12-21-EN.iso 

if the usb works ok - the problem is clearly software, and will be fixed by a fresh install, or by installing drivers

if you post the pc model - or mobo model, we can point you to the drivers

>>   I connected a pci usb card and the same result.  <<  that can point to a bad motherboard
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oneononecompAuthor Commented:
I had uninstalled the drivers and let Windows reinstall - same result.  Also had the most current chipset for the mobo. When booting in Linux I was able to determine it was a hardware mobo issue.
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nobusCommented:
tx for feedback
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