I downloaded Windows Memory Diagnostic, burned to bootable CD, and ran the program after rebooting.
All tests are successful EXCEPT Stride6 cache enabled (cache disabled runs successfully). The problem is, it doesn't give an error, the computer instead freezes. Not always at the exact same moment in the test run.
Google Search indicates that Stride6 errors indicate a stick problem. Of course, since the computer freezes, there's no way to tell which stick is the problem.
The big question I have before going out to buy new memory is:
If testing with cache disabled is successful, is the fact that it freezes with cache enabled a sign of something other than a RAM problem? Again, all other tests, cache enabled and disabled, are successful.
Thanks in advance.