Hi everyone I recently changed the RAM on my early 2009 iMac but I can't figure out what I've done wrong because now when I turn my computer on, the loud beeping alarm sounds. The company I bought the RAM from has guaranteed me that they should work and they're at a loss as to why it won't. I thought I followed all the instructions - but I did notice that the RAM sticks didn't 'click' when I inserted them. Are they meant to kind of 'click' into place? Could that be the problem? And if that isn't the problem does anyone have any ideas what I could be doing wrong or how to fix this issue? Please heeeeelp. Thank you!