This article has been archived. It is offered "as is" and will no longer be updated.
When you run multiple programs (especially MS-DOS-based programs) on aWindows-based computer that has insufficient system memory (RAM) andcontains an Intel Pentium Pro or Pentium II processor, information inmemory may become unavailable or damaged, leading to unpredictableresults. For example, copy and compare operations may not workconsistently.
This behavior is an indirect result of certain performance optimizationsin the Intel Pentium Pro and Pentium II processors. These optimizationsaffect how the Windows 95 Virtual Machine Manager (VMM) performs certainmemory operations, such as determining which sections of memory are not inuse and can be safely freed. As a result, the Virtual Machine Manager mayfree the wrong pages in memory, leading to the symptoms described earlier.
This problem no longer occurs in Windows 98. To resolve this problem, install the current version of Windows. For information about the current version of Windows, visit http://www.microsoft.com/windows.