system won't post after ram overclock

cura214

Prominent
Nov 18, 2017
2
0
510
I've been overclocking my ram bit by bit. I got it completely stable at 2800mhz (overnight testing on memtest, Prime95 and RealBench). I've changed DRAM Frequency, but not touched BCLK.

I tried to bump it up to 3000mhz. System failed to post, and the DRAM motherboard LED lit up. I tried clearing the CMOS, still failed to post, but this time the DRAM LED stayed off and the Boot device LED lit up.

Tried removing battery, clearing CMOS, replacing battery (according to motherboard manual instructions), same thing.

No clue what to do next :( Any ideas?

System specs:

i7 7700k
GPU: none (in the mail)
Motherboard: Asus ROG STRIX Z270F GAMING
RAM: Corsair Vengeance 2133-DDR4
Cooler: Noctua NH-15
PSU: Corsair 750W 80+ Gold