A few hours ago from the time of this post I did a BIOS flashback on my Asus P9X79 Pro to a modded 4801 BIOS with NVMe support that I found posted online in a forum because I wanted to purchase an NVMe SSD with a PCI-E 3.0 4x adapter and use it as a boot drive on this motherboard. However, now I'm having issues, even after flashing back to the 4701 BIOS and clearing CMOS. One issue is if I shutdown my PC, the ethernet port on my motherboard won't detect by Windows 10 and the only way to workaround this issue is to reinstall the network driver or restart my PC. This works until the next time I shutdown my PC, I must go through the same process again as Windows won't detect my ethernet port. Also I noticed that I get a warning symbol next to the Intel Management Engine driver in the Device Manager if I boot my PC from a power off, but not from a reboot. A reboot from Windows 10 shows does not show the Intel Management Engine in the Device Manager but the network is detected, until I shutdown my PC and only loading up Windows 10 then rebooting back to Windows 10 the problem does not show up but the Intel Management driver does not show up in the device manager. I also tried booting to a Ubuntu Live session from a USB flash drive and my network is not detected on that OS either. Did I damage something on my motherboard due to this modded BIOS flash?