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Microsoft KB Archive/103266

From BetaArchive Wiki

After Installing Windows NT 3.1, Hangs at Logon or 640x480x16


The information in this article applies to:

  • Microsoft Windows NT Server version 3.1
  • Microsoft Windows NT Workstation version 3.1
  • Microsoft Windows NT Advanced Server, version 3.1


Microsoft has identified a problem which may result if you install the retail version of Windows NT over the Windows NT March Beta using the ATI video driver at a resolution higher than 640 by 480 pixels with 16 colors (640x480x16). Your system may hang at the logon screen or default to 640x480x16.

The installation instructions specify that you should remove all previous installations of Windows NT and Windows NT Advanced Server from your computer before installing the retail version.


This problem occurs because earlier versions of the ATI video drivers may reside in the %systemroot%\system32 directory instead of the %systemroot%\system32\drivers directory. This may cause Windows NT to use the older version of the driver, causing the system to hang. Or, because Windows NT is designed to default to a generic VGA driver if it can't find a display driver, your screen may appear in 640x480x16.


If Windows NT is installed on a FAT partition, use the following procedure:

  1. Restart MS-DOS and delete all Windows NT ATI-related files from the hard disk drive.
  2. Restart Windows NT. It will use the generic VGA display driver.
  3. Reinstall the ATI video driver.

Additional query words: prodnt

Keywords : kbdisplay
Issue type :
Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW310 kbWinNTSsearch kbWinNTS310 kbWinNTAdvSerSearch kbWinNTAdvServ310 kbWinNTS310xsearch kbWinNT310xSearch kbWinNTW310Search

Last Reviewed: October 27, 2000
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