Windows 3.0 Enhanced Mode Hangs at Startup on Super VGA (62352)


The information in this article applies to:

  • Microsoft Windows 3.0
  • Microsoft Windows 3.0a
This article was previously published under Q62352

SYMPTOMS

Microsoft Windows version 3.0 enhanced mode stops responding (hang) during start up on a 386 machine equipped with a Super VGA adapter. Real and standard modes (WIN /R and WIN /S) work correctly, and Setup runs properly.

CAUSE

This problem occurs because many Super VGA cards require an EMMExclude= statement to work properly under Windows version 3.0 enhanced mode. This is because they use an additional memory area in the adapter segment that is not detected by Windows.

Adapters that should NOT require an EMMExclude include IBM, Paradise, and Video Seven.

RESOLUTION

To add this statement, insert the following line under the [386Enh] section of the SYSTEM.INI file: 
   [386Enh]
   EMMExclude=C400-C7FF
If this does not help, extend the exclusion range to CBFF.

MORE INFORMATION

A Super VGA card is defined as a display card that offers IBM Video Graphics Array (VGA) compatibility as well as additional proprietary-extended display modes, such as 800 x 600. Most non-IBM VGA cards sold today have Super VGA capability.

The products included here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.
Modification Type:MinorLast Reviewed:7/7/2005
Keywords:KB62352
©2004 Microsoft Corporation. All rights reserved.