A lot of laptop and desktop computer problems are caused by a failed memory or a failing memory module. As a laptop repair technician I test memory modules every time I get a laptop for repair. I have tried many different memory testing utilities but finally I stopped on Memtest 86+. So far it is one of the best free memory test utilities and I use it everyday. You can find this utility on the Memtest 86+ homepage.
To test your memory modules you have to do next:
If your memory passed the test, you will not see any red error messages.

I usually allow a memory module pass the test 4-5 times. I’ve seen many times that a failing memory doesn’t fail the test on the firs pass and then fails on the second or third pass.
If your memory failed the test you will see red error messages.

To test your memory modules you have to do next:
- download Memtest 86+.
- Change the boot order on your computer to boot from a floppy drive or from a CD/DVD drive.
- Insert the floppy disk or the CD disc with Memtest 86+ into the computer.
- Start the computer.
If your memory passed the test, you will not see any red error messages.
I usually allow a memory module pass the test 4-5 times. I’ve seen many times that a failing memory doesn’t fail the test on the firs pass and then fails on the second or third pass.
If your memory failed the test you will see red error messages.