Built new PC and monitor, keyboard and mouse don't get power

col_hc

Commendable
Jul 7, 2016
4
0
1,510
Hello, guys. I've built PC recently with following specs:

Mobo: MSI X99A raider
CPU: i7 6800k
GPU: MSI GTX 970 blahblahblah
RAM: x2 DDR4 HyperX Fury 16Gb
PSU: Zalman GS2 600W
other hardware stuff, I suppose, isn't that relevant.

I've built it two days ago and it boots like this:
- fans connected to PSU start,
- sysfan starts,
- GPU fans and leds start,
- mobo led lightens,
- mobo speaker makes two short beeps
and system works this way for as long as I let it to. Monitor, USB mouse and USB keyboard do not respond, though. I've tried for almost two days to fix it - all in vain.

DDIM is originally placed into DDIM1 and DDIM5, I tried both planks separately as well. Nothing changes. Except when I insert no plank at all. In this case in reboots in loop w/o beeps.
I've also tried another (working) GPU - also no result.
Tried to reset CMOS and reconnect everything from scratch a few times.

Any suggestions on my next steps?
Thanks in advance.