I bought a p4 motherboard a while back that was said to be in working condition, but when i got it, it wasen't. BUT, i think i just need the correct ram, for it uses pc800 and i have been using pc800/8 (is there a difference?). I just reset the switch panal according to a hp vectra vl800 handbook i found online, before it gave me a weird beep code, and when i turn all the switches to on, it gives me a 1-3-3-1 beep code, and it dosen't post and just flashes the power light. But the handbook says to turn all the switches to off, except the 6th one whcih is left on. When i do that, it dosen't beep or post, just flashes the power light.