My S2460(tiger MP) has always done this beep when booting. Its one logn beep followed by 3 short beeps. I tried removing everything except the video card, processors and RAM and it still did it. Then ...
My buddy got himself an Abit KG7-Lite and a XP 2100+, a 512 PC2100 DIMM, and a Radeon 8500. He plugged it al in, turns it on, he gets no video output, and it gives a beeeeeeeep, pause, beeeeeeeep, ...