Explanation of error codes generated by Device Manager in Windows XP Professional

You probably reached this article because Device Manager reported an error code, and you are not sure how to resolve it. In this article, we will help you find your error code and suggest what you might try to correct the error.

This article is intended for an intermediate to an advanced computer user.

Note For help with device problems in Windows Vista, visit the following Microsoft Web site to automatically diagnose and repair problems with devices. For example, visit the following site when the device manager does not detect your hardware, audio, USB, or other devices or when your devices are disabled or not working.

This section lists the error codes and possible resolutions for the error codes. The error codes are listed in numeric order.

Before you continue, make sure that you have the error code available. You can view the error code in the device Properties dialog box available in Device Manager. You can also resolve many of the errors within Device Manager.

To start troubleshooting, follow these steps:

1. Make sure that Device Manager is open, and that the device that has the problem is selected. You can perform some recommended resolutions through Device Manager.
   1. Right-click My Computer, and then click Properties.
   2. Select the Hardware tab, and then click Device Manager.
   3. Double-click the device type that has the problem. For example, if you have problems with your modem, double-click Modems to see the devices in that category.
      
      A list of devices appears. If a device has problems, the device has a red exclamation point next to it. If a device is unknown (usually because of missing drivers), the device has a yellow question mark next to it.
   4. Right-click the device that has the problem, and then click Properties. This opens the device Properties dialog box. You can see the error code in the Device status area of this dialog box.
2. Use the Troubleshooting Wizard, if it is available, to help you diagnose and resolve your problem.
   1. On the device Properties dialog box, click the General tab.
   2. Click Troubleshoot to start the Troubleshooting Wizard. The wizard asks you some simple questions and provides a solution to your problem based on the answers that you provide. If the Troubleshooting Wizard is not available, go to step 3.
   3. Follow the resolution steps provided by the wizard to resolve the problem.
   4. Check the Device status area of the device Properties dialog box to see whether the error is resolved. If the error is resolved, you are finished. Otherwise, go to step 3.
3. If the Troubleshooting Wizard did not help you resolve your problem or was not available, locate your error code in this article.
   
   Note If you cannot locate your error code in this article, contact Support. For information about how to do this, visit the following Microsoft Web site:
   http://support.microsoft.com/contactus

   (http://support.microsoft.com/contactus)
4. Follow the recommended resolutions for that error code.
   • Check the Device status area of the device Properties dialog box to see whether the error is resolved. If the error is resolved, you are finished.
   • If the problem still occurs, unfortunately, this article did not resolve your problem. For your next steps, you may want to ask someone for help. Or, you may want to contact Microsoft Support to help you resolve this problem. For information about how to do this, visit the following Microsoft Web site:
     http://support.microsoft.com/contactus

     (http://support.microsoft.com/contactus)

Codes 1 through 10

Review this section if you have received an error code between 1 through 10.

Code 1Cause

The device has no drivers installed on your computer, or the drivers are configured incorrectly.

Recommended resolution

Update the driver

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

In the device properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to update the driver. If updating the driver does not work, see your hardware documentation for more information.

Code 3Recommended resolutions

Here are some things that you can try to resolve this problem.

Close some open applications

If the computer has insufficient memory to run the device, you can close some applications to make memory available. You can also check memory and system resources, and the virtual memory settings.

• To check memory and system resources, open Task Manager. To open Task Manager, press CTRL+ALT+DELETE, and then click Task Manager.
• To check virtual memory settings, right-click My Computer, click Properties, click the Advanced tab, and then click Settings in the Performance area.

Uninstall and reinstall the driver

The device driver may have become corrupted. If the driver is corrupted, uninstall the driver from Device Manager and scan for new hardware to install the driver again.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

1. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Install additional RAM

You may have to install additional random access memory (RAM). For more information about RAM, visit the following Microsoft Web site:Code 10

If the device has a FailReasonString value in its hardware key, that string is displayed as the error message. The driver or enumerator puts this registry string value there. If there is no FailReasonString in the hardware key, you receive the following error message: Recommended resolutions

Here are some things that you can try to resolve this problem.

Update the driver

In the device Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to update the driver.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

View the article in the Microsoft Knowledge Base

For more information about Code 10-related errors , click the following article number to view the article in the Microsoft Knowledge Base:

Codes 11 through 20

Review this section if you have received an error code between 11 and 20.

Code 12Cause

This error can occur if two devices that are installed on your computer have been assigned the same I/O ports, the same interrupt, or the same Direct Memory Access channel (either by the BIOS, the operating system, or both). This error message can also appear if the BIOS did not allocate enough resources to the device.

Recommended resolution

You can use the Troubleshooting Wizard in Device Manager to determine where the conflict is, and then disable the conflicting device.

Disable the conflicting device

1. On the device Properties dialog box, click the General tab.
2. Click Troubleshoot to start the Troubleshooting Wizard. The wizard asks you some simple questions and provides a solution to your problem based on the answers that you provide.
3. Follow the resolution steps provided by the wizard to resolve the problem.

Code 14Recommended resolution

Restart your computer

Click Start, click Shut Down, and then select Restart in the Shut Down Windows dialog box to restart the computer.

Code 16Cause

The device is only partly configured.

Recommended resolution

Assign additional resources to the device

Note The following steps might only work if the device is a Plug and Play device. If the device is not a Plug and Play device, you can refer to the device documentation for more information.

1. On the device Properties dialog box, click the Resources tab.
2. If a resource is listed with a question mark next to it, select that resource to assign it to the device.
   • If the resource cannot be changed, click Change Settings.
   • If Change Settings is unavailable, try clearing the Use automatic settings check box to make it available.

Code 18Recommended resolution

Update the driver. If that does not work, reinstall the driver for this device through Device Manager.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

Update the driver

In the device Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to update the driver. If this does not work, you will have to uninstall and reinstall the driver.

Uninstall and reinstall the driver

If the driver is corrupted, uninstall the driver from Device Manager and scan for new hardware to install the driver again.

1. On the device properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Code 19Recommended resolutions

A registry problem was detected.

This can occur when more than one service is defined for a device, if there is a failure opening the service subkey, or if the driver name cannot be obtained from the service subkey. Here are some things that you can try to resolve this problem.

Uninstall and reinstall the driver

Uninstall the driver from Device Manager and scan for new hardware to install the driver again.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

1. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Revert to the most recent successful registry configuration

This content is designed for an advanced computer user.

The Last Known Good Configuration feature is a recovery option that you can use to start your computer by using the most recent settings that worked. The Last Known Good Configuration feature restores all the registry information and driver settings that were in effect the last time that the computer started successfully.

For more information about the Last Known Good Configuration feature, click the following article number to view the article in the Microsoft Knowledge Base: Edit the registry

This content is designed for an advanced computer user.

As a last resort, you can edit the registry directly. For more information, see the Registry Reference at the following Microsoft Web site:

Codes 21 through 30

Review this section if you have received an error code between 21 and 30.

Code 21 Recommended resolution

This error means that Windows is in the process of removing the device. However, the device has not yet been completely removed. Here are some things that you can try to resolve this problem.

• Wait several seconds, and then press the F5 key to update the Device Manager view.
• If that does not resolve the problem, restart your computer. Click Start, click Shut Down, and then select Restart in the Shut Down Windows dialog box to restart the computer.

Code 22 Recommended resolution

Enable the device by using Device Manager.

In Device Manager, click Action, and then click Enable Device. This starts the Enable Device wizard. Follow the instructions.

Code 24Cause

The device is installed incorrectly. The problem could be a hardware failure, or a new driver might be needed.

Devices stay in this state if they have been prepared for removal. After you remove the device, this error disappears.

Recommended resolution

Remove the device, and this error should be resolved.

Code 28Recommended resolution

Install the driver

You may be prompted to provide the path of the driver. Windows may have the driver built-in. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

In the device Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to install the driver.

Code 29 Recommended resolution

Enable the device in the BIOS.

Enable the device in the BIOS

Enable the device in the BIOS of the device. For information about how to make this change, see the hardware documentation or contact the hardware vendor.

Codes 31 through 40

Code 31 Recommended resolution

Update the driver

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

In the device Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to update the driver.

Code 32 Cause

The start type for this driver is set to disabled in the registry.

Recommended resolutions

Reinstall the driver for this device. If this does not work, you might have to change the device start type parameter in the registry.

Uninstall and reinstall the driver

Uninstall the driver from Device Manager, and then scan for new hardware to install the driver again.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

1. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Change the start type in the Registry

This content is designed for an advanced computer user.

As a last resort, you can edit the registry directly if the driver is required, and if reinstalling or upgrading does not work. Change the start type inside the registry by using Registry Editor.

Code 33Recommended resolution

The translator that determines the kinds of resources that are required by the device has failed.

Recommended resolution

Configure the hardware. If configuring the hardware does not work, you might have to replace it.

Configure or replace the hardware

If running the Troubleshooting Wizard did not resolve the problem, configure or replace the device. Contact the device hardware vendor for more information about how to configure or replacing the device.

Code 34 Recommended resolution

Manually configure the device.

This content is designed for an advanced computer user.

Manually configure the device

The device requires manual configuration. See the hardware documentation or contact the hardware vendor for instructions on manually configuring the device. After you configure the device itself, you can use the Resources tab in Device Manager to configure the resource settings in Windows.

Code 35Cause

The Multiprocessor System (MPS) table, which stores the resource assignments for the BIOS, is missing an entry for your device and must be updated.

Recommended resolution

Contact the system vendor to update the BIOS.

Code 36Recommended resolution

The interrupt request (IRQ) translation failed. Change the settings for the IRQ reservations.

This content is designed for an advanced computer user.

Change the settings for IRQ reservations

For more information about how to change BIOS settings, see the hardware documentation.

You can also try to use the BIOS setup tool to change the settings for IRQ reservations (if such options exist). The BIOS might have options to reserve certain IRQs for peripheral component interconnect (PCI) or ISA devices.

Code 37Recommended resolution

The driver returned a failure when it executed the DriverEntry routine. Reinstall the drivers for this device.

Uninstall and reinstall the driver

Uninstall the driver from Device Manager, and then scan for new hardware to install the driver again. You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware manufacturer’s Web site.

1. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Code 38Recommended resolution

The driver could not be loaded because a previous instance is still loaded. Restart the computer.

Use the Troubleshooting Wizard

If you have not already run the Troubleshooting Wizard, do so now.

1. On the device Properties dialog box, click the General tab.
2. Click Troubleshoot to start the Troubleshooting Wizard. The wizard asks you some simple questions and provides a solution to your problem based on the answers that you provide.
3. Follow the resolution steps provided by the wizard to resolve the problem.

Restart your computer

Click Start, click Shut Down, and then select Restart in the Shut Down Windows dialog box to restart the computer.

Code 39Cause

There are several causes of Code 39 errors:

• A required device driver is missing.
• A required binary file is corrupted.
• There is a problem with the file I/O process.
• A driver that is referencing an entry point in another binary file is unable to load.

Recommended resolution

Reinstall the drivers for this device.

Uninstall and reinstall the driver

Uninstall the driver from Device Manager, and then scan for new hardware to install the driver again.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

1. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Code 40Recommended resolution

Information in the registry's service subkey for the driver is invalid. Reinstall the drivers for this device.

Uninstall and reinstall the driver

Uninstall the driver from Device Manager, and then scan for new hardware to install the driver again.

You may be prompted to provide the path of the driver. Windows may have the driver built-in, or may still have the driver files installed from the last time that you set up the device. However, sometimes, it will open the New Hardware Wizard which may ask for the driver. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.

1. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
2. Restart your computer.
3. Open Device Manager, click Action, and then click Scan for hardware changes. Follow the instructions.

Codes 41 through 50

Review this section if you have received an error code between 41 and 50.

Code 41Recommended resolution

This problem occurs if you install a driver for a non-Plug and Play device, but Windows cannot find the device. Here are some things that you can try to resolve this problem.

If the Troubleshooting Wizard does not resolve the problem, do one of the following:

• If the device was removed, uninstall the driver, connect the device, and then click Scan for hardware changes to reinstall the driver.
• If the hardware was not removed, the driver files might be obsolete. In this case, update the driver from Device Manager. In the device Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to update the driver.
• If the device is a non-Plug and Play device, you may have to install a newer version of the driver. To install non-Plug and Play devices, use the Add Hardware wizard. Click Start, and then click Run. In the Open box, type hdwwiz.cpl.

Code 42Recommended resolution

A duplicate device was detected. This error occurs when a bus driver incorrectly creates two identically named sub-processes (known as a bus driver error), or when a device with a serial number is discovered in a new location before it is removed from the old location. You may be able to resolve this problem by restarting your computer.

Restart your computer

Click Start, click Shut Down, and then select Restart in the Shut Down Windows dialog box to restart the computer.

Code 43Recommended resolution

One of the drivers controlling the device notified the operating system that the device failed in some manner.

If you have already run the Troubleshooting Wizard, you might want to check the hardware documentation for more information about diagnosing the problem.

Code 44Recommended resolution

Restart your computer.

Restart your computer

Click Start, click Shut Down, and then select Restart in the Shut Down Windows dialog box to restart the computer.

Code 45Recommended resolution

This error occurs if a device that was previously connected to the computer is no longer connected. To resolve this problem, reconnect this hardware device to the computer.

No resolution is necessary. This error code is only used to indicate the disconnected status of the device and does not require you to resolve it. The error code resolves automatically when you connect the associated device to the computer

The following information is for the advanced user.

If Device Manager is started with the environment variable set to 1 (which means show these devices), any previously attached (NONPRESENT) devices are displayed in the device list and assigned this error code.

Code 46Recommended resolution

The device is not available because the system is shutting down.

No resolution is necessary. The hardware device should work correctly next time that you start the computer.

This error code is only set when Driver Verifier is enabled and all applications have already been shut down.

Code 47Recommended resolutions

Here are some things that you can try to resolve this problem.

Reconnect the device

This error code occurs only if you used the Safe Removal application to prepare the device for removal, or pressed a physical eject button.

Reconnect the device to your computer

Disconnect this device from the computer, and then connect it again.

Restart your computer

Make sure that the device is connected correctly to your computer, and then restart your computer. Click Start, click Shut Down, and then select Restart in the Shut Down Windows dialog box to restart the computer.

Code 48Recommended resolution

Update the driver.

Update the driver

Contact the manufacturer of your hardware device to obtain the latest version or the updated driver. Then, install it on your computer.

Code 49Cause

The system hive has exceeded its maximum size and new devices cannot work until the size is reduced. The system hive is a permanent part of the registry associated with a set of files that contains information related to the configuration of the computer on which the operating system is installed. Configured items include applications, user preferences, devices, and so on. The problem might be specific devices that are no longer attached to the computer but are still listed in the system hive.

Recommended resolution

Here are some things that you can try to resolve this problem.

This content is designed for an advanced computer user.

Uninstall devices that you are no longer using

To resolve this problem, you should first try uninstalling any hardware devices that you are no longer using.

1. Set up Device Manager to show devices that are no longer connected to the computer.
   1. Click Start, and then click Run.
   2. In the Open box, type cmd. The Command Prompt window opens.
   3. At the prompt, type the following command, and then press Enter:
      set devmgr_show_nonpresent_devices=1
2. In Device Manager, click View, and then click Show hidden devices. You will now be able to see devices that are not connected to the computer.
   1. Select the device that you want to uninstall.
   2. On the device Properties dialog box, click the Driver tab, and then click Uninstall. Follow the instructions.
   3. Restart your computer.
3. Uninstall the devices that you no longer need.
4. Check the device Properties dialog box in Device Manager to see whether the error is resolved.

If uninstalling devices does not resolve this problem, unfortunately, you might have to reinstall Windows. We recommend that you contact Support for help with this problem. For information about how to do this, visit the following Microsoft Web site:

For help with device problems in Windows Vista, visit the following Microsoft web page:

For more information about how to troubleshoot device conflicts with Device Manager, click the following article number to view the article in the Microsoft Knowledge Base: For more information about the error codes in Windows Me, click the following article number to view the article in the Microsoft Knowledge Base: For more information about how to troubleshoot resource conflicts by using Device Manager in Windows XP, click the following article numbers to view the articles in the Microsoft Knowledge Base: