Went from a 32bit motherboard to a 64bit. Installed new 2x2gb memory for a total of 8gb also installed new processor. While waiting for the parts to arrive I cleaned everything inside. Installed two new 1tb HDs and new (referbished) video card. The day I took the motherboard out I went into the hospital (kinda sucked) so forgot where all the wires go. Common since the wires are pretty stright forward, connectors only fit certian plugs. Put it all together except I can't find out where plug P4 connects to. Problem on startup I get two beeps and front panel lights 1,2,3 on 4 off. No video. Any help will be appriciated as I've sunk a lot of money into this thing, should have replaced it but love the machine. Thank in advance.