WINDOWS 1002000 PROFESSIONAL RESOURCE KIT [Electronic resources] نسخه متنی

Troubleshooting Hardware Support Components

This section contains troubleshooting examples for the Windows 2000 Professional hardware management components.

For more information about troubleshooting problems with devices, see "Device Management" and "Troubleshooting Tools and Strategies" in this book.

Troubleshooting System Buses

This section contains procedures for troubleshooting the system buses supported by Windows 2000 Professional.

Troubleshooting USB

Because of the nature of USB devices, there are no resource settings that can cause a USB device to function improperly or fail.

To resolve problems with USB speakers

Most speakers are available in two modes: digital and audio. If you use USB speakers and don't receive a signal, make sure the speakers are in digital mode.

To resolve most other problems involving a USB device

If only one device fails, reconnect that device to another USB port. If the device works, the original port is faulty and should be repaired. If the device does not work when connected to the new port, the device is probably faulty and should be repaired or replaced.

If the bus configuration is multi-tiered, make sure the configuration adheres to the following guidelines:




You cannot connect a bus-powered hub to another bus-powered hub.

Bus-powered hubs cannot support more than four downstream ports.

Bus-powered hubs cannot support bus-powered devices that draw more than 100 milliamperes (mA).

The bus cannot exceed five tiers.




Uninstall the USB host controller from Device Manager and restart the computer. This allows Windows 2000 Professional to redetect and reinstall the entire bus.

If you want to connect two computers on the IEEE 1394 bus, make sure you use the correct cable. This cable is not supplied with the bus and must be purchased separately.