Well, you can use the Memory Diagnostic tool that is built into Windows that tests RAM errors. It may be worth a try using, it doesn't take as long as any other memory tester. Bring up a RUN command by pressing <R> and the windows logo at the same time. Type MDsched.exe and click yes, you will be prompted to restart now or later. It will go through 2 passes and the results will be displayed after you log on. Hope this helps.