I just bought a S5000PSL (SAS) to replace a previous motherboard. Everything's assembled properly, and the fans/lights turn on. But I get no POST, no beeps, no video, or even lights on the keyboard/mouse. I removed the ram, and even then, no beep-codes. One thing, my PSU doesn't have a "auxiliary power signal" connector. But a quick google search turned up that it wasn't a necessity. Is that wrong? Is that why the motherboard isn't functioning? I would appreciate any help.