So, voltage on memory should be 1.2. Set manually to 1.16 and 1.1, no help, fails memtest. Tried increasing tRAS from 35 to 36, on both channels, didn't help. Tried changing tRFC from 278 to 279 and 300, no difference. Tried setting Command Rate to (3 default is 2), failed to boot. Desperately changed Latency, tRCD, tRAS to 15-15-15 for both channels, didn't help(values on device are 14-14-14).
RAM Model is HX421C14FBK4/16.