[JorWesFlow]

I have a 12" PowerBook G4 1.5GHz (Model: M960LL/A) that I am getting ready to sell to a friend of mine. I had an additional 512MB of RAM installed in addition to the 256MB that is built in to the Logic Board. To make sure everything was good to go, I decided to run the hardware test. The memory portion seemed to not complete/pass and I received an error code: "2MEM/103/4: DIMM1/J31" so I figured I would fix the problem by replacing/upgrading the RAM with a 1GB stick.

After installing the new 1GB RAM, I ran the hardware test again. The entire test passed/completed this time, but I still received the error code "post/0/2048DIMM1/J31". I reseated the RAM and got the same result.

Also, System Profiler shows that I only have 768MB installed, which isn't true. It should say that I have 1280MB. This leads me to believe it's the actual RAM slot that is bad? But I don't know.

Okay, I just put the old 512MB stick back in and reran the hardware test. Everything passed!

So I guess my question is why the hardware test failed the original stick once, then passed it the second time?

And why the new 1GB is only showing up as 512MB?

[ibook_steve]

There could be something wrong with the DIMM slot, so only half of the memory is being recognized. Try cleaning the slot carefully and reseating the RAM. You might also want to try another 1GB stick and see if the problem persists.

Steve

[JorWesFlow]

Cleaning it? How would I go about doing that?

[ibook_steve]

Compressed air and/or rubbing alcohol on a q-tip.

Steve