Microsoft KB Archive/226064

= Computer Runs Out of System Page Table Entries with Multiple Monitors =

Article ID: 226064

Article Last Modified on 2/25/2007

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional Edition

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This article was previously published under Q226064



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SYMPTOMS
When you are running Windows 2000 with multiple monitors, the computer may run out of system page table entries (PTEs). PTEs are required to map the frame buffer.



WORKAROUND
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To work around this behavior, increase the number of PTEs:  Start Registry Editor (Regedt32.exe). Locate the SystemPages value under the following key in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

 Double-click the SystemPages value. The Edit DWORD Value dialog box appears. Type 36000, and then click OK. Quit Registry Editor.

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

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MORE INFORMATION
For additional information about PTEs, click the article number below to view the article in the Microsoft Knowledge Base:

189327 HOWTO: Map Adapter RAM into Process Address Space

Keywords: kbenv kbprb KB226064

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