Hardware Compatibility List
The Windows NT 4.0 Hardware Compatibility List is available in theSupport folder on the Windows NT 4.0 CD-ROM as a file named Hcl.hlp. TheHardware Compatibility List is a listing of computers and peripheralsthat have passed compatibility testing with Windows NT 4.0. Before youinstall Windows NT or if you are experiencing problems with your videoadapter, make sure your video adapter appears on this list.
Although your video adapter may not appear on the Hardware CompatibilityList, it may work with Windows NT. If a device does not appear on theHardware Compatibility List, Microsoft does not guarantee the device willwork properly with Windows NT.
For additional information, please see the following article(s) in theMicrosoft Knowledge Base:
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 youcontinue to experience problems, check for information concerning yourvideo adapter in the Setup.txt and Readme.wri files.
The Setup.txt file is available in the I386 folder on the Windows NT 4.0CD-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.wrifile, and you continue to experience problems, check the Drvlib\Videofolder on the Windows NT 4.0 CD-ROM for an updated video driver.
This folder contains video drivers written by third-party manufacturersfor their video adapters that are provided for your convenience. If youhave a question concerning any of these drivers, please contact themanufacturer of that driver. If these adapters are not detected duringSetup, the standard VGA driver is installed.
Perform the following steps to manually add one of these drivers:
- In Control Panel, double-click Display.
- Click the Settings tab, click Display Type, and then click Change.
- Click Have Disk and then click Browse to browse the Windows NT CD-ROM for the appropriate video driver for your display adapter.
- After you locate the appropriate video driver, click OK, read the message about third-party hardware vendors, and then click Yes.
- Click Reboot when you are prompted.
Drivers for the following adapters and chip sets are in the Drvlib\Videofolder 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
If Windows NT does not start or if distorted or unreadable text appearson the screen, start your computer using VGA mode. By default, theWindows NT boot loader menu offers options to start normally or in VGAmode. To force Windows NT to use the standard VGA driver, choose the VGAMode option.
If VGA mode works correctly, please see the "The Ability to Easily ChangeDisplay 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 maylet you run Windows NT normally. The following three display settings, ifset incorrectly for your video adapter or monitor, may prevent Windows NTfrom loading:
- Color Palette
- Desktop Area
- Refresh Frequency
NOTE: The Font Size setting affects only the size of the text on thescreen. 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.
Last Known Good Configuration
If Windows NT does not start in VGA mode, start Windows NT using the lastknown good configuration. To do so, restart your computer and press theSPACEBAR when you see the "Press spacebar NOW to invoke HardwareProfile/Last Known Good menu" message. The last known good configurationworks only if you have not successfully logged on since the problembegan.
If the last known good configuration works, see the "Driver" section inthis article. If the last known good configuration does not work, try torecover your system with the Emergency Repair Disk. Please see yourWindows NT documentation for more information about the Emergency RepairDisk.
If the last known good configuration works, there may be a problem withthe installed video driver. Please consult the video adapter manufacturerfor a possible video driver update.
NOTE: Because of changes to the Windows NT 4.0 video subsystem, mostWindows NT 3.x video drivers do not work in Windows NT 4.0.