Hi there, I just got a new iMac and the first boot up went smoothly. I installed the System Updates and when it restarted, I got a BEEP before the usual Apple chime. I thought nothing of it as it was fine booting up after that, however I just upgraded my RAM to 16GB (4GB in each slot) and I then got 3 BEEPS, three times I think. It continued to boot up fine since then and registered that the 16GB is installed in my system and there appear to be no problems. Should I be concerned? Thanks for your time.