Microsoft KB Archive/176989

= Stop: C0000143 Caused by PCAnywhere =

Article ID: 176989

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q176989



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
After installing the product "PC Anywhere" and restarting, the following STOP blue screen error message is displayed:

STOP: c0000143

The required system file Display_driver.dll is bad or missing.



CAUSE
The AW_Host.sys file continually adds one or two AW_HOST key(s) to the registry when you restart the computer.



RESOLUTION
To resolve this problem, first read and follow the steps from the following Microsoft Knowledge Base articles:

170397 STOP: 0XC0000143 Missing System File. Display_Driver.dll

162577 STOP: C0000143 Missing Display_Driver.dll

If neither of these articles apply, you can try the following:
 * Install Windows NT Server 4.0 into a parallel installation. Delete the AW_Host.sys file from the %systemroot% directory.

For information on how to modify the registry of a secondary installation and disable services, refer to the following Microsoft Knowledge Base article:

165748 How to Disable a Service or Device that Prevents NT from Booting

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Use Regedt32 to change the following registry entries in the failing Windows NT %systemroot%\system32\config\system hive by following these steps:

 Run Regedt32 and load the System hive from the failing Windows NT installation.

NOTE: This key will be called Your_name in the steps below. Substitute the correct name for your computer. ControlsetXXX represents the controlset that your machine boots from.

If this is an upgrade from Windows NT 3.51 to Windows NT 4.0, you need to load the System.sav hive for editing. This is the hive file that is loaded during the upgrade and then saved to System.

 In the HKEY_LOCAL_MACHINE\Your_name\controlsetXXX\services\AW_HOST key, change the value of Start:REG_DWORD: to 0x4. In the HKEY_LOCAL_MACHINE\Your_name\controlsetXXX\services\awhost32 key, change the value of Start:REG_DWORD: to 0x4. In HKEY_LOCAL_MACHINE\Your_name\controlsetXXX\services\vgasave key, change ImagePath to systemroot\system32\drivers\vga.sys. In the HKEY_LOCAL_MACHINE\Your_name\controlsetXXX\services\vgasave\device0 key, change InstalledDisplayDrivers to vga.

NOTE: The above registry key is one path; it has been wrapped for readability. In the HKEY_LOCAL_MACHINE\Your_name\controlsetXXX\services\vgastart key, change ImagePath to \systemroot\system32\drivers\vga.sys.</li> In the HKEY_LOCAL_MACHINE\Your_name\controlsetXXX\services\vgastart\device0 key, change InstalledDisplayDrivers to vga.

NOTE: The above registry key is one path; it has been wrapped for readability.</li></ol> </li> Select the Your_name hive, click Unload Hive from the Registry menu, and then exit Regedt32.</li> Copy the Vga.sys (%systemroot%\system32\drivers) from your parallel installation to the original installation of Windows NT.</li> Copy the Msgina.dll and Vga.dll (%systemroot%\system32) from the parallel installation to the original installation of Windows NT.</li> Shut down and restart your computer in your original Windows NT installation.</li></ol>

For additional information, see the following article or articles in the Microsoft Knowledge Base:

229033 Programs That Replace Msgina.dll May Cause 'STOP 0x0000001E' Error Message

Additional query words: c143 Pcanywhere pcany

Keywords: kbprb KB176989

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