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MCSA 70-270 XP Exam Prep

Category - MCSA 70-270 XP

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You attempt to connect a device to the USB port through a USB root hub on a Windows XP computer, but the device is not recognized. Contemplating an issue with the USB device, you try many other USB devices, but they don’t get recognized. You verify that the USB root hub and USB device will work on another computer, which is running Windows 2000 and has the USB configured. What should you do to make the devices work on the Windows XP computer?
  1. Verify that an IRQ has been assigned to the USB controller in the computer’s BIOS.
  2. Configure the Registry setting for HKEY_LOCAL_COMPUTER\HARDWARE_DEVICES\USB to 0.
  3. Configure the Registry setting for HKEY_LOCAL_COMPUTER\HARDWARE_DEVICES\USB to 1.
  4. Downgrade the drivers to Windows 2000 drivers and see if the device will work.
Explanation
Answer: A - To fix this issue, you need to verify that an IRQ has been assigned to the USB controller in the computer’s BIOS.

Key Takeaway: USB Root Hubs are both physical and virtual installation ports that can be found on your computer. In this case, the root hub may be improperly configured. USB controllers require that an IRQ be assigned in the computer’s BIOS. If the controller is not properly configured, you will see the root hub displayed in Device Manager with a yellow exclamation point.
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