Microsoft KB Archive/139149

= PPT: Troubleshooting Video Driver UMA Conflicts =

Article ID: 139149

Article Last Modified on 8/17/2005

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APPLIES TO


 * Microsoft PowerPoint 95 Standard Edition

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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:

device=emm386.exe noems

Add the following to the end of this line:

x=a000-c7ff

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= 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.

Additional query words: 7.00 97 ppt95 pp7 ppt7 ppt97 multi media diamond ati mach vram multimedia w_powerpt hang freeze lock up

Keywords: kbenv kbgraphic KB139149

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