2x2GB RAM, One works, the other... blinking power light.

Any ideas? I bought this from OWC and already sent it back after going thru it with their tech support. They tested them and said they both passed and sent them back to me.

To no avail, I still get the same issue. When I install both sticks, only 1GB of ram comes up. Install one at a time and one works, the other just gives me a blinking power light. What does the blinking power light mean?

Even if they are supposed to be installed in matched pairs, I should be able to install each on by itself right? Or if they are matched pairs does one not work without the other?


Any suggestions or comments would be greatly appreciated. I want to make sure I know all my stuff before I have to call OWC tech support.