At the time you posted this, I was going through the BIOS reset and reconfiguration procedure as well.   Here is what I found:   1.  I doubt this latest BIOS is necessary to get it to boot properly with 6.5.0; however, it is recommended as 2.50 contains meltdown/spectre fixes 2.  I also changed primary graphics adapter to onboard (from the reset default of PCIE) as I only have the iGPU and I need the drivers loaded for Plex hardware transcoding. (AUTO) will not do it.  T