[jriveractu]

I bought a 1GB module (Samsung factory original) and installed it on the empty slot on my iMac. The thing is that when I turn the computer on, System Profiler won't recognize the new memory, it shows the slot as being empty.

Any ideas ?

[ibook_steve]

Bad memory? It happens.

Steve

[analogika]

Are you sure it's the correct memory type?

Are you sure it's FIRMLY seated in the slot?

Are you sure you didn't walk across carpet with rubber-soled shoes while or just before handling the RAM chips?

[jriveractu]

Yeah, It's specifications are:

DDR2 | 533 MHz | PC2-4200

Just as stated in my iMac manual. The only thing the manual adds (which I don't understand) is that the module needs to be unbuffered and unregistered. And I'm pretty sure it's firmly seated, I hear the "click" as the rings retreat themselves. As for static charge, I touched the base of the iMac for a couple of seconds (that should do it, right?)

I'll try again tonight and re-post. Thanks both for your help.

[Veltliner]

Try to push it in at an angle, first on one side a bit, and then on the other.

(If you try to push it in parallel to the slot it might be more difficult, as the slots are pretty tight).

Also: the two rings should go in almost all the way. If you have to press with the ram cover to get them in, the ram isn't seated.

[analogika]

If you've done all the above (and it sounds like you were quite careful), it's not unlikely that your RAM stick is simply broken.

It happens.

[jriveractu]

Well, that's it.
I tried it all once again and nothing, so I'll get it exchanged for a new one.

Thanks all for your help !