I am running Windows Home Server as well and also am having the same issues. I upgraded from the j version to the n bios and all went well but now it has boot issues. I have a Sil 3114 PCI card installed and after the update it gets past the boot screen and then hangs. Since it is a home server box I am using the 4 sata ports on the card plus the two internal headers as well. Oddly, if I remove three of the drives sata headers from the Sil card WHS boots normally. Otherwise it will hang and end up with a blank screen. Since one of the drives is still connected via the PCI card my thought is that there is another bug in the bios that needs to be fixed.