Article ID: 146912 - View products that this article applies to.
This article was previously published under Q146912
When you view the Performance tab in System properties, the amount of memory reported may differ from the actual amount of memory installed in the computer.
This behavior can occur for any of the following reasons:
To resolve the issue, use the method in the appropriate section.
Himem.sys Not Using All the Memory on an EISA ComputerIf you have an EISA computer, determine whether Himem.sys is addressing all the available memory. To do so, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q82712 82712
TITLE : HIMEM.SYS /EISA Switch
Device or Program Loading from the Config.sys or Autoexec.bat FileTo determine whether a real-mode device or program is claiming a portion of RAM, follow these steps to bypass the loading of the Config.sys and Autoexec.bat files:
Virtual Device Driver Loading from the System.ini FileTo determine whether this behavior is caused by a virtual device driver being loaded from the System.ini file, replace the System.ini file with a clean version. To do so, please see the following article in the Microsoft Knowledge Base:
TITLE : Creating a New System.ini File Without Third-Party Drivers
Protected-Mode Driver Causing Memory MismatchTo determine whether a protected-mode device driver is causing a memory mismatch, perform the following steps:
Registry Is DamagedTo determine whether the registry is damaged, replace the current registry with a backup copy. For information about how to do so, please see the following article in the Microsoft Knowledge Base:
TITLE : How to Troubleshoot Registry Errors in Windows 95
A CMOS Setting Is Disabling Some of the RAMSome computers have CMOS settings that can disable a portion of the computer's RAM or prevent Windows from recognizing the RAM. Computers known to have such a setting include:
Maxphyspage Setting in System.ini FileRemove or disable the "maxphyspage=" line in the System.ini file, and then restart your computer. To disable the line, use a text editor (such as Notepad) to edit the System.ini file and place a semicolon (;) at the beginning of the line.
Ramdrive.sys Being LoadedCheck your Config.sys file for a line containing "Ramdrive.sys." If you have this line, it means you are using a RAM drive. To disable the RAM drive, remove or disable the line in the Config.sys file that contains "ramdrive.sys." To disable the line, use a text editor (such as Notepad) to edit the Config.sys file and place a semicolon (;) at the beginning of the line.
Article ID: 146912 - Last Review: January 19, 2007 - Revision: 1.2
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