Hi I am trying to build an old PC its an ATX board. It’s the I am puzzled with although they are marked where to put them I cant see an appropriate pin connector for Power Switch. The pins I have left are ATX SW G SW SB LED G LED. I assume the last two can be left out I did connect it too the ATX SW but the PC is dead. Its old and I dont know if if the MOBO is good or not would the PSU fire up regadles of the MOBO been no good.