So im sitting here putting my computer together and thought i would check to make sure everything is working before i finish it up with optical drives, hdd, graphics card, and RAM. I plug in PSU, and turn it on, i get fans going and lights turn on. But i never hear any BEEP sequence. I dont have my RAM here yet, hopefully soon, but i wanted to get started early, does it need RAM before it will make any sounds? Mobo, PSU, CPU, front panel cables, sound card are all that are connected right now.