PPT: Troubleshooting Video Driver UMA Conflicts
Article ID: 139149
Article Last Modified on 8/17/2005
APPLIES TO
- Microsoft PowerPoint 95 Standard Edition
This article was previously published under Q139149
SYMPTOMS
Your system may stop responding when you open or view a presentation
containing imported graphics.
CAUSE
This behavior is caused by the expanded memory manager scanning
too aggressively and setting up upper memory blocks (UMBs) that
conflict with the video adapter.
RESOLUTION
To troubleshoot this problem, try the following:
- Open your Config.sys file.
- Locate the line similar to:
Add the following to the end of this line:
This line should now be similar to:
device=emm386.exe noems x=a000-c7ff
- Save the file and restart your computer.
MORE INFORMATION
Windows 95 uses the MS-DOS expanded memory emulation driver,
Emm386.exe, to provide expanded memory services (EMS) for MS-DOS
applications that need it. If you load Emm386.exe with an x=<range>
parameter, Windows 95 doesn't try to put an EMS pageframe in that
range of memory addresses.
A standard VGA card requires memory ranges A000-AFFF and B800-BFFF.
Some VESA Local Bus and PCI cards use the entire range A000-C7FF.
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Keywords: kbenv kbgraphic KB139149