Decoding Hardware Errors

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When Windows encounters a problem with a device or its driver, it changes the icon in Device Manager and displays an error code on the General tab of the device's properties dialog box. Each code is identified by a number and a brief text description . Table 24-1 contains a partial list of error codes and suggested actions you should take to try to resolve them

Table 24-1 Common Device Manager Error Codes

Error Code Error Message

What to Do About It

This device is not configured correctly. (Code 1)

After downloading a compatible driver for the device, click the Update Driver button and follow the wizard's prompts to install the new driver.

The driver for this device might be corrupted, or your system might be running low on memory or other resources . (Code 3)

Check available memory and, if necessary, close some programs to free up RAM. If you have sufficient memory, try uninstalling and reinstalling the driver

This device cannot start. (Code 10)

Device failed to start. Click the Update Driver button to install updated drivers if any are available . The Troubleshoot button might provide useful information as well

12 This device cannot find enough The device has been assigned one or free resources that it can use . If you more I/O ports, IRQs, or DMA channels want to use this device, you need to used by another device This error disable one of the other devices on message can also appear if the BIOS is this system . (Code 12) configured incorrectly (for example, if a

USB controller doesn't get an IRQ from the BIOS) Check BIOS settings Use the Resources tab to identify the conflicting device

14 This device cannot work properly until you restart your computer. (Code 14)

The driver has probably been installed correctly, but it will not be started until you reboot the system.

16 Windows cannot identify all the A legacy device is improperly config-

resources this device uses. (Code 16) ured. Use the Resources tab to fill in the missing details

18 Reinstall the drivers for this device .

Click the Update Driver button to start the Update Hardware wizard and reinstall the driver.

Error Code Error Message

What to Do About It

19 Your registry might be corrupted.

Incorrect or conflicting information is entered in the registry settings for this device . Try uninstalling and then reinstalling the driver. Try using System Restore to roll back the configuration to a point when the device worked properly

21 Windows is removing this device.

The system will remove the device. Wait a few seconds, and then refresh the Device Manager view. If the device continues to display, restart the computer

This device is disabled. (Code 22)

The device has been disabled using Device Manager To enable it, click the Enable Device button .

24 This device is not present, is not working properly, or does not have all its drivers installed. (Code 24)

This is a catch-all error that can be caused by bad hardware or corrupt or incompatible drivers. This message also appears after you use the Remove Device option

28 The drivers for this device are not installed. (Code 28)

After downloading a compatible driver for the device, click the Update Driver button and follow the wizard's prompts to install the new driver.

29 This device is disabled because the firmware of the device did not give it the required resources . (Code 29)

This is most commonly seen with SCSI adapters, third-party disk controllers, and other devices that supply their own BIOS. Check the documentation for the device to learn how to re-enable it.

31 This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

Windows was unable to load the driver, probably because it is not compatible with Windows Vista. After downloading a compatible driver for the device, click the Update Driver button and follow the wizard's prompts to install the new driver

32 A driver service for this device was not required and has been disabled (Code 32)

The driver has been disabled. The start type for this service is set to Disabled in the registry. If the driver really is required, change the start type in the BIOS, using the BIOS setup utility as defined in the documentation for the device . If the device previously worked properly, use System Restore to return to a working configuration .

Error Code

Error Message

What to Do About It

33

Windows cannot determine which resources are required for this device. (Code 33)

This error typically indicates a misconfigured legacy device or a hardware failure. See the documentation for the device for more information .

34 Windows cannot determine the This legacy device requires a forced settings for this device. Consult the configuration . Change the hardware documentation that came with this settings (using jumpers or a software device, and use the Resource tab to utility), and then use Device Manager's set the configuration. (Code 34) Resources tab to set the forced configuration .

35

Your computer's system BIOS does not include enough information to properly configure and use this device. To use this device, contact your computer manufacturer to obtain a firmware or BIOS update. (Code 35)

This error is specific to multiprocessor systems . Check with the system manufacturer for a BIOS upgrade.

36

This device is requesting a PCI interrupt but is configured for an ISA interrupt (or vice versa). Please use the computer's system setup program to reconfigure the interrupt for this device. (Code 36)

IRQ translation failed. This error usually occurs on Advanced Power Management (APM) machines . Check BIOS settings to see if certain IRQs have been reserved incorrectly. Upgrade to an ACPI BIOS if possible .

37

Windows cannot initialize the device driver for this hardware. (Code 37)

After downloading a compatible driver for the device, click the Update Driver button and follow the wizard's prompts to install the new driver.

38

Windows cannot load the device driver for this hardware because a previous instance of the device driver is still in memory. (Code 38)

Restart the computer.

39

Windows cannot load the device driver for this hardware. The driver might be corrupted. (Code 39)

The driver is missing or corrupted, or it is in conflict with another driver. Look for an updated driver or reinstall the current driver. If the device worked previously, use System Restore to roll back to a working configuration

40

Windows cannot access this hardware because its service key information in the registry is missing or recorded incorrectly (Code 40)

Information in the registry's service key for the driver is invalid. Reinstall the driver.

Error Code

Error Message

What to Do About It

41

Windows successfully loaded the device driver for this hardware but cannot find the hardware device . (Code 41)

Windows loaded the driver but cannot find the device . This error occurs with legacy devices because Plug and Play cannot detect them . Use Device Manager to uninstall the driver and then use the Add Hardware wizard to reinstall it

42

Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42)

Restart the computer.

43

Windows has stopped this device because it has reported problems . (Code 43)

A driver has reported a device failure . Uninstall and reinstall the device If that doesn't work, contact the device manufacturer.

44

An application or service has shut down this hardware device (Code 44)

The device has been halted by an application or service. Restart the computer

47 Windows cannot use this hardware The device has been prepared for device because it has been prepared ejection from a PCMCIA slot, USB port, for "safe removal," but it has not or docking station . Unplug the device been removed from the computer, and plug it in again, or restart the (Code 47) computer.

48 The software for this device has Contact the hardware vendor for a been blocked from starting because compatible driver it is known to have problems with Windows Contact the hardware vendor for a new driver (Code 48)

CHAPTER 25

Managing Disks and Drives

The Windows l Disk-Management Toolkit S95

Running Disk Management S96

Managing Disks from the Command Prompt S9S

Setting Up a New Hard Disk 901

Managing Existing Disks and Volumes 908

Working with Virtual Hard Disks 920

When you get right down to it, storage defines what you can and can't do with Windows. A big hard disk (or two or three) makes it possible for you to download and store an enormous amount of digital music, photos, and video; record and preserve television shows; manage large-scale, data-intensive projects; and keep your entire collection of digital resources safely backed up.

Using today's gigantic disks effectively, however, often entails partitioning them intelligently so that separate volumes can be assigned distinct purposes . For a variety of reasons, for example, we recommend that you keep your operating system and personal data on separate volumes, that (if possible) you make a full image backup of the volume on which your Windows system files are stored, and that you make regular and frequent backups of your valuable data. All of this requires some planning and some familiarity both with diskmanagement concepts and with the management tools that Windows 7 provides.

For more information about file management, see Chapter 8, "Organizing Files and Information " For more information about backing up, see Chapter 11, "Backup, Restore, and Recovery."

In this chapter, we'll look at the disk-management tools provided by Windows 7 and survey some of the scenarios under which you might find these tools of use.

What's in Your Edition?

Disk management is the same in all editions of Windows 7 . V_>

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