How to Use a Memory Tester

A memory tester is an excellent troubleshooting tool.

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If you diagnose or repair computers, a memory tester can be an excellent troubleshooting tool. Memory testers, which can save computer technicians a great deal of time, are inexpensive and can pay for themselves in increased productivity. There are a number of ways to test memory, including software testing tools and on-board computer diagnostics. Unlike those tools, a memory tester checks the physical RAM (random access memory). This hardware test can catch problems that other memory-testing tools miss.

  

Instructions

1

Shut down the computer and disconnect the power cord. Remove the retaining screw from the computer case and pull the case-release lever to remove the case cover. If you are working with a desktop computer, the release lever should be on the top. For a tower computer, the lever should be on the side.

2

Look for any lights on the motherboard. Many modern motherboards will include warning lights next to the memory modules. These warning lights are indicators that there is a problem with one or more of the memory slots or memory modules. To remove the memory modules to be tested, flip down the white retaining clips that hold them in place. Pull the memory module out of the computer.

3

Plug the memory tester into an electrical outlet and turn it on. Make sure that the green ready light is on and that the LCD display gives a ready message. If you see any red or orange lights, or if the lights are blinking, the tester is not ready for use.

4

Insert the memory module into the tester and push the test button to start the memory test. Most memory testers will allow users to choose from a number of tests--from a quick scan to a more comprehensive test. One of the most useful ways to check memory is to run a looping test, which checks the connectors one at a time, identifying any that are dirty or worn. This test can save a lot of troubleshooting time by quickly identifying bad memory that might otherwise go undetected.

5

Test each memory module thoroughly. Running every available test two or three times is the best way to make sure the memory is good. Discard any bad modules. Be sure to test any new memory you buy as well--new memory can be defective.