Still working on this issue. As before I still do not have POST. Cannot get into diags. Question is I was searching my EFI partition on the HDD and only found 2 files under HP\BIOS\CURRENT which are 01966.bin and 01966.s12 and no .sig that everyone mentions here. Is that an issue? My rev is 1962 which is good to go with 01966 (FD#01=PCI,0,0,0,2C,FFFFFFFF,1962103C,01966.fd).