Question ASRock Z390 Taichi Ultimate wont post and hanging on post code 10


Dec 4, 2013
I have been trying everything for the last few hours on getting my ASRock Z390 Taichi Ultimate to post but to no avail. It a completely new build but I keep running into the same problem. I have reset the cmos, changed out the ram im using, (im only using 1 stick in the first slot until I can get it stable). Removed the video card, reinstalled the cpu, plugged everything on and back in. Im just not sure what mistake im making. I also cant get the machine's speaker to work so im going off the led post codes.

When I turn the machine on it goes to 27 then back down to 10 where it stays. Everything has power but it just sits at 10.

Parts are as follows

ASRock Z390 Taichi Ultimate LGA 1151

CORSAIR Vengeance LPX 64GB (2 x 32GB) 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model CMK64GX4M2A2666C16

Intel Core i7-9700K Coffee Lake 8-Core 3.6 GHz (4.9 GHz Turbo) LGA 1151

1000w power supply. Like I said I havent even gotten the onboard graphics to work so I dont think the cards matter at the moment.

Any help would be appreciated !

At this point ill take any advice. This is like my 5th build and this is the first time ive run into something I couldnt fix.