About 2 weeks ago I put together a new machine with an AT motherboard (I had a wonderful Enlight case). It was working fine for 2 weeks. Then I put PNY PC100 128MB memory into it. Now it doesn't want to start. After multiple power ons/offs, it will finally come up. Before it had 2 64MB PC100 generic DIMMS. Do you think the 1 128MB PNY PC100 DIMM could be screwing it up? Thanks for any help. Mark