cat 5 to pathch panel

I am stuck on what should be a simple wiring issue. I traced a wire to punch in on back of patch panel, it is cat 5 twited pair. I assume the other end has to be pinned out as a straight through since going to pc ? I have tried 568 a and b and no luck, any help would be appreciated. thanks. or do I need to match pin ou on cable running from front of patch panel to switch?