Microsoft has released a free tool called "Windows Memory Diagnostic".
Windows Memory Diagnostic tests the Random Access Memory (RAM) on your computer for all kind of errors. The diagnostic includes a comprehensive set of memory tests. If you are experiencing problems while running Windows, you can use the diagnostic to determine whether the problems are caused by failing hardware, such as RAM or the memory system of your motherboard.
Windows Memory Diagnostic is designed to be easy and fast. On most configurations, you can download the diagnostic, read the documentation, run the test and complete the first test pass in less than 30 minutes.

To run Windows Memory Diagnostic, you must reboot your computer with the disk or CD-ROM on which you installed Windows Memory Diagnostic in the drive. After the reboot, Windows Memory Diagnostic will load and its interface will appear. After loading, the first test pass will begin, using the default standard test suite, and continue until complete, unless Windows Memory Diagnostic is either paused or exited. Once the first test pass is complete, Windows Memory Diagnostic will begin a second test pass using the same settings as before. Windows Memory Diagnostic will continue to run test passes until you exit.
Download Windows Memory Diagnostic Tool
Windows Memory Diagnostic User Guide
This article was posted by VG in following section: Software, Windows 7, Windows Vista, Windows XP.
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MANOJIT
THanks for the important information .
goldi
VG vista dvd contains it when we select repair it shows memory diagnosis option,,,,,,,,,,,,,,,
what is PEN_LIST_CORRUPT & IRQL_NOT_LESS_OR_EQUAL ??????????
Rishi
Hi, is it the same thing that Windows Vista provides? I have such option on my dual boot option. I ran it once also.