Microsoft KB Archive/236302

= Error Message: STOP: 0xC0000143 After Uninstalling Procomm Plus 32 =

Article ID: 236302

Article Last Modified on 11/1/2006

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APPLIES TO


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

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This article was previously published under Q236302



SYMPTOMS
When you uninstall Procomm Plus 32 and restart your computer, you may receive the following error message, and your computer is unable to complete the boot process:

STOP: 0xC0000143 Missing System File The required system file Display_driver.dll is bad or missing.



CAUSE
This error message can occur if you installed Procomm Plus 4.7 with Remote Relay as an installed component. Remote Relay renames your original display adapter driver to Rrctrl .dll, where  is a number from 1 to 6. The uninstall procedure may remove the Rrctrl files, but does not change the registry entry, resulting in the error message.



RESOLUTION
To resolve this problem, reinstall your video display adapter driver. To do so, first attempt to restart your computer in VGA mode.

If You Can Restart into VGA Mode

 * 1) Place your Windows NT CD in your CD-ROM drive.
 * 2) Click Start, point to Settings, and then click Control Panel.
 * 3) Click the Settings tab, click Display Type, and then click Change.
 * 4) If you installed a display drive that came with Windows NT, select the Manufacturer and Model for your display adapter, and then click OK. If you used a third-party display driver, click Have Disk, navigate to the location for your Windows NT 4.0 drivers, and then click OK.

NOTE: Some third-party display drivers are designed to use their own Setup.exe file to install their drivers. Check the documentation that came with the display driver if using Have Disk does not allow you to install the driver successfully.
 * 1) Restart your computer and adjust your display settings as necessary.
 * 2) Click Start, point to Find, and then click Files Or Folders.
 * 3) Type rrctrl, and then click Find Now. Note that you may not have any of these files, or you may have several files.
 * 4) Rename each of these files.

If You Cannot Restart into VGA Mode
 Install Windows NT into another folder. It is preferred that you install Windows NT into a different drive, if possible. This is known as a parallel installation. Upgrade the parallel installation to the same Service Pack level as the original installation of Windows NT. Install the same video driver in the parallel installation that you used to install in the original Windows NT installation. Navigate to the the following folder in the parallel installation, and look for the display driver system (.Sys) file:

\System32\Drivers

where  is the name of the Windows NT folder that contains the parallel installation.

 Click Start, point to Programs, and then click Command Prompt. Type each of the following lines, pressing the ENTER key after each line:

cd \system32\drivers

copy  \system32\rrctrl1.dll

copy  \system32\rrctrl2.dll

copy  \system32\rrctrl3.dll

copy  \system32\rrctrl4.dll

copy  \system32\rrctrl5.dll

copy  \system32\rrctrl6.dll

where  is the name of the Windows NT folder for the parallel installation,   is the name of the original Windows NT folder, and   is the name of the display driver .Sys file.

This step copies the display driver to the files that the entries for Remote Relay have set in the registry for display.</li> Restart your original installation of Windows NT in VGA mode, and then follow the steps in the "Can Restart into VGA mode" section of this article.</li></ol>

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MORE INFORMATION
The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

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