taiyang

Well. That 0729 BIOS from Dsanke was migrated from TM machine with Z370. To flash it using fpt in OS on a DM machine with Z170, you need to 1. flash without your battery using only the power cord, and 2. unplug the power cord after the flashing. DO NOT restart with power. 3. connect the battery and power cord back and boot the machine. According to Dsanke, this is an issue with different BIOS structures. In Z170, it is "3MB Flash Descriptor + ME Region" and "5MB BIOS Region", while in Z370, it is "2MB Flash Descriptor + ME Region" and "6MB BIOS Region". If the system reboots or turns off with power, the NVRAM part in the BIOS will be messed up. Dsanke has a very detailed "readme" in Chinese about how to flash this BIOS, which the repository on GitHub doesn't have. For reference, http://www.smxdiy.com/thread-3097-1-1.html I confirmed this last week (in a hard way). Flash it with a ch341a programmer, or flash it in OS and then cut the power.😉

I just confirmed that with Dsanke bios 1.07.29 migrated from Z370, my P775dm2 with Z170 now works fine with 2080 non-S. Flashing this BIOS 0729 is tricky though. A programmer with a clamp is straight forward, but with software flashing in OS, the laptop needs to be completely cut from any power after flashing, according to Dsanke: http://www.smxdiy.com/thread-3097-1-1.html

I bumped into a similar issue today. I have a P775DM2-G which ran fine with 9900k and 1070. It has a modded BIOS 1.06.13 by dsanke, and a 330W PSU. I put a 2080 non-s inside with a new heatsink today, and it stuck at the bios logo. Keys were not working so it didn't even get into BIOS. I swapped back the 1070 and then it booted into Win10 right away. I felt it really strange how the BIOS can limit GPU which has its own vBIOS, but this thread somehow convinced me. Is your machining with 2080 running a dsanke bios 1.07.29?