I had both BIOS chips posting, then after COPY BIOS2 to BIOS1, the BIOS1 chip would enter endless post loop with Q-code "00". I can post with BIOS2 chip. I ordered a replacement BIOS chip for the R5E from
www.bios-chip24.com, and also have an RMA offer from ASUS. To follow through on the RMA, I would have to go through the enormous work of strip all components off the mobo to ship back to ASUS repair center, they will not send a replacement chip. So I am left with these two choices: replace BIOS1 with chip from bios-chip24 or RMA the board. Your discussion of the chip having a unique UUID identifier and mac address has me concerned with Windows authentication issues. I have not installed Win 10 yet, but every time I changed BIOS chips would I get an authentication error and have to resolve with Windows? Is it true that the chip itself had identifiers programmed in that Windows uses for licensing? I thought the mac address was in the NIC chip at the Ethernet socket or the WAN chip, not the BIOS chip? Thank you.