Microsoft KB Archive/155681

= Troubleshooting Display Problems in Windows NT 4.0 =

Article ID: 155681

Article Last Modified on 11/1/2006

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APPLIES TO


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

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This article was previously published under Q155681



SUMMARY
This article describes how to troubleshoot video display in Windows NT version 4.0. The following items are included with Windows NT to help you troubleshoot video problems:
 * Hardware Compatibility List
 * Setup.txt file
 * Readme.wri file
 * Video drivers from other manufacturers
 * VGA mode
 * The ability to easily change display settings
 * Last Known Good Configuration



Hardware Compatibility List
The Windows NT 4.0 Hardware Compatibility List is available in the Support folder on the Windows NT 4.0 CD-ROM as a file named Hcl.hlp. The Hardware Compatibility List is a listing of computers and peripherals that have passed compatibility testing with Windows NT 4.0. Before you install Windows NT or if you are experiencing problems with your video adapter, make sure your video adapter appears on this list.

Although your video adapter may not appear on the Hardware Compatibility List, it may work with Windows NT. If a device does not appear on the Hardware Compatibility List, Microsoft does not guarantee the device will work properly with Windows NT.

For additional information, please see the following article(s) in the Microsoft Knowledge Base:

ARTICLE-ID: 142865

TITLE : Microsoft Support Policy on Hardware Not On Windows NT HCL

Setup.txt and Readme.wri Files
If your video adapter appears on the Hardware Compatibility List and you continue to experience problems, check for information concerning your video adapter in the Setup.txt and Readme.wri files.

The Setup.txt file is available in the I386 folder on the Windows NT 4.0 CD-ROM and the Readme.wri file is available in the Winnt\System32 folder.

Video Drivers from Other Manufacturers
If your video adapter appears on the Hardware Compatibility List, additional information is not available in the Setup.txt or Readme.wri file, and you continue to experience problems, check the Drvlib\Video folder on the Windows NT 4.0 CD-ROM for an updated video driver.

This folder contains video drivers written by third-party manufacturers for their video adapters that are provided for your convenience. If you have a question concerning any of these drivers, please contact the manufacturer of that driver. If these adapters are not detected during Setup, the standard VGA driver is installed.

Perform the following steps to manually add one of these drivers:
 * 1) In Control Panel, double-click Display.
 * 2) Click the Settings tab, click Display Type, and then click Change.
 * 3) Click Have Disk and then click Browse to browse the Windows NT CD-ROM for the appropriate video driver for your display adapter.
 * 4) After you locate the appropriate video driver, click OK, read the message about third-party hardware vendors, and then click Yes.
 * 5) Click Reboot when you are prompted.

Drivers for the following adapters and chip sets are in the Drvlib\Video folder on the CD-ROM:

  Folder         Adapter -  X86\Avga       Compaq AVGA X86\Chips     Chips Video Accelerator(64300 64310 65545 65548 65550) X86\Imagine   Number Nine Visual technologies Imagine 128 X86\Imagine2  Number Nine Visual technologies Imagine 128 II   X86\Neomagic   Neomagic MagicGraph 128/Z/ZV X86\S3virge   S3 inc. ViRGE X86\Trident   Trident Video Accelerator PPC\GXT150    IBM gxt150p

VGA Mode
If Windows NT does not start or if distorted or unreadable text appears on the screen, start your computer using VGA mode. By default, the Windows NT boot loader menu offers options to start normally or in VGA mode. To force Windows NT to use the standard VGA driver, choose the VGA Mode option.

If VGA mode works correctly, please see the "The Ability to Easily Change Display Settings" section in this article. If VGA mode is unsuccessful, please see the "Last Known Good Configuration" section in this article.

The Ability to Easily Change Display Settings
If VGA mode lets you run Windows NT, changing the display settings may let you run Windows NT normally. The following three display settings, if set incorrectly for your video adapter or monitor, may prevent Windows NT from loading:
 * Color Palette
 * Desktop Area
 * Refresh Frequency

NOTE: The Font Size setting affects only the size of the text on the screen. It does not prevent Windows NT from loading.

Perform the following steps to change display settings:

 In Control Panel, double-click Display. Click the Settings tab. Try each of the following steps, restarting Windows NT after each change, until Windows NT starts normally. Repeat the steps as necessary.  Reduce the Color Palette setting. To do so, click a lower setting in the Color Palette box. Reduce the desktop area. To do so, move the Desktop Area slider to the left. Reduce the refresh rate. The current setting may be too high for your monitor. To reduce this setting, click a slower refresh rate in the Refresh Frequency box.</li></ol> </li></ol>

Last Known Good Configuration
If Windows NT does not start in VGA mode, start Windows NT using the last known good configuration. To do so, restart your computer and press the SPACEBAR when you see the "Press spacebar NOW to invoke Hardware Profile/Last Known Good menu" message. The last known good configuration works only if you have not successfully logged on since the problem began.

If the last known good configuration works, see the "Driver" section in this article. If the last known good configuration does not work, try to recover your system with the Emergency Repair Disk. Please see your Windows NT documentation for more information about the Emergency Repair Disk.

Driver
If the last known good configuration works, there may be a problem with the installed video driver. Please consult the video adapter manufacturer for a possible video driver update.

NOTE: Because of changes to the Windows NT 4.0 video subsystem, most Windows NT 3.x video drivers do not work in Windows NT 4.0.

Additional query words: prodnt svga xga ncy corrupt erd

Keywords: kbdisplay KB155681

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