Re:Windows Memory Diagnostic "extended" test?
2013/05/29 12:16:39
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Depending on how much RAM you have, it can take several hours to thoroughly test it using Memtest.
As Jim and Scott have already said, you will need to run the test multiple times (3x is strongly suggested).
When I've needed to use it, for my situation it takes 6+ hours. It is an outstanding program for testing for faulty memory.