Hello! I have a problem with an old motherboard D845WN, it run with 256mb ram. I inserted SAMSUNG 512MB PC133 DS SD RAM and it beeps 3 long (I have 2 of this single and pair in same beep, nothing on the screen,just the winchester led on).I tried another 512 MB RAM its SS(SDR 64x8 133/P4 512M AUM 4009) and the same 3 beep.I change the videocard and the same 3 beep. On the homepage of the motherboard it can runs but it can't !! What is the problem and what can i do?