asus crosshair vi hero x370 Q-code 90

DMMsystems

Prominent
Mar 28, 2017
10
0
510
hi
I've got a ryzen system: crosshair vi hero, R7 1700, 32GB g.skill flareX. The system was only using 16GB of the 32GB RAM (4 sticks) @ 3200 MHz after attempting to underclock it to 1800MHz to get it to recognize all 32GB also turned the voltage to 1.45V instead of 1.35 the system won't post at all I've tried safe-boot button and reset/retry without success. all I get is a Q-code 90. I've tried taking the CMOS battery out and removing 2 sticks of ram but still no but. any ideas as to why I'm not able to post?

 

DMMsystems

Prominent
Mar 28, 2017
10
0
510

yes I have a m.2 960 evo connected. I managed to solve the Q-code. but the system still only uses 16 of the 32GB available of ram. currently using the DOC profile for the 3200MHz CL14-14-14-34 @ 1.35 volts. This is supposed to be Ryzen compatible RAM right out of the box...