Help installing ram

[penguin09]

I bought new ram for my macbook pro today. I'm 100% sure it's compatible since I checked before and after I ordered, but my computer refuses to boot up with it in. I followed the instructions and after installing my original stick and the new stick, the sleep light just blinked. That usually means the ram isn't stuck in far enough I read so I pushed the sticks in farther and still no go.

I'm pretty sure I'm putting them in right, because I can take out the new ram and boot my computer up fine. I've tried using the original ram in both slots- works fine. I've tried just using the new ram in either slot and I can hear the computer make the noises as though it'll start up but the screen remains black (no blinking indicator light). When I put both sticks in, I get the blinking light. Does it seem like the ram is just bad then? And also, any other suggestions because I'd rather not have to send this back in. Thanks

 

[Makosuke]

It's at least possible to buy RAM that, though apparently meeting the necessary specs isn't actually compatible. This is a little more common with OSX, because it's pretty picky about RAM.

But if it IS the right kind, or you bought it from a reseller that guarantees it'll work with your Mac, then it's probably just a bad stick. It does happen--I recently got two (in this case for a Windows box, same symptoms) from a usually reliable vendor.

 

[Parsec]

You can buy RAM from any vendor and stick in a Mac as long as the specs are correct. So, if they are and you still have problems, it might be defective. I've had that happen once on a Windows machine also. Perhaps you know someone else with a MBP to check this.

Later, Parsec.

 

[thebassoonist]

Will these work to update to 4GB?

Centon 2GB PC2-5300 667MHz 200pin SODIMM DDR2 Memory Module.