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A disabled device appears with a red x in Device Manager.
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Practice: Configuring Devices
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In this practice, you will temporarily change the configuration of a network card to remove it from service without uninstalling the device.
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Exercise 1: Disable a Device
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1. Open Device Manager, and then select a network card configured for your computer. 2. In Device Manager, double-click the listing of the network card.
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Managing Hardware Devices and Drivers
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3. Select the Device Usage drop-down list and then select Do Not Use This Device (Disable). The device is now disabled from operation within this Hardware profile. 4. Open the Properties page for the network card, and choose Use This Device (Enable) to re-enable the network card for use in this Hardware profile. Alternatively, you can right-click the device and select Enable or Disable, depending on the current state of the device.
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Lesson Review
The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter. 1. Under what circumstances would you adjust the resource settings for a device
2. You need to remove a PnP device from a configuration temporarily but want to leave it physically connected to the computer. You want to minimize the amount of work required to use the device later. Which of the following is the best option to accomplish your goal a. From the General page of the device s Properties dialog box, choose Do Not Use this Device (Disable) in the Device Usage drop-down list. b. In Device Manager, right-click the device and choose Uninstall. c. Using the Safely Remove Hardware utility, choose to stop the device. 3. Greg s computer has an external USB hard disk connected to a USB hub on his computer. He is reporting that the disk is connected properly, but the drive (G) normally associated with the disk is not available. Upon investigation, you discover that the indicator light on the hub is not illuminated and the device does not appear in Device Manager. Disconnecting and reconnecting the device has no effect. What is likely the quickest way to return the disk to proper functionality
Lesson 2
Configuring Hardware Devices and Drivers
10-17
Lesson Summary
You can use Device Manager to disable and enable individual devices. Manual configuration of system resources is possible for some devices, but you should do it only when there is a conflict with other resources on the computer. Manual configuration should be kept to a minimum to allow Windows Server 2003 the greatest amount of flexibility in automatically allocating resources to all devices. Use Device Manager to update drivers. You can use Device Manager to roll back updated drivers to the previously configured driver. If a PnP device has been uninstalled, you must rescan for hardware devices in order to detect and reenable the device. If a non-PnP is uninstalled, it must be reinstalled.
10-18
10
Managing Hardware Devices and Drivers
Lesson 3: Troubleshooting Hardware Devices and Drivers
Problems with drivers will arise, particularly when device configuration is not possible through PnP, or when updates are made to core system component drivers. When you cannot configure a device through PnP, the chance of mismatching a device and its driver, misconfiguring the device, or misallocating system resources increases. When a core system component driver is updated, a restart is required and any problems with the driver might not be discovered until after the computer restarts.
After this lesson, you will be able to
Understand how to use disaster recovery methods for failed device drivers Analyze and troubleshoot driver-related problems
Estimated lesson time: 15 minutes
Recovering from Device Disaster
Occasionally, when you install or upgrade a device driver, the device might not function properly or might cause conflicts with other devices on the system. Depending on the role of the device, the effect of the problem will range from annoying to catastrophic. A faulty configuration of a core system component, such as a video device, can render the computer unusable. Rolling back the driver, after all, is difficult if you cannot see the screen. Thankfully, there are many ways to recover from faulty driver configuration. Each is specifically suited to a different device failure scenario. We list the tools that you can use in the event of incorrect driver configuration in Table 10-3.
Table 10-3
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