I recently purchesed an ASUS A7V133 (used). I got the board out of the box and connected a video card, working memory, and the CPU/Heatsink/Fan, and then connected to power. Everything worked fine. I then proceeded to connect my hard disk drives and cd-roms. However, this time I got no video or beeps. I disconnected everything and went back to memory, video, cpu, and power. I still get no beeps or video. I looked on ASUS' website and found out that there might be something grounding the mobo to the case, and it suggested that I take the mobo out of the case and do everything on a table somewhere. I followed the directions and still got no video or beeps. What could I be doing wrong?