New computer displays nothing on bootup

vanillaice

Prominent
Nov 30, 2017
8
0
510
Hi guys, yesterday I built a new computer and when it boots up there's nothing on my monitor.

MOTHERBOARD: ASUS ROG STRIX B350

GPU: AMD R9 390
CPU: AMD RYZEN 7 1700
RAM: T-FORCE 16G DDR4

I've tried reseating the ram and gpu a hundred times by now, nothing. I've tried booting up with only 1 ram stick, same thing happens. I have a Corsair 750w PSU, when I turn on the PC all the rgb lights and fans are working so I don't think it's a power issue. I have used the same card and monitor for 2 years up until yesterday, so I know they arent broken. I'm stumped here, really looking for some help. Thank you.

Edit:
It seems I've posted the same thread twice, sorry about that I hate using forums from my phone
 

vanillaice

Prominent
Nov 30, 2017
8
0
510
I don't have a post card, so I can't answer that. There are several lights that remain turned on that are part of the board it self, but the manual doesn't help me with that so I'm guessing those are purely for cosmetic effect.
 

vanillaice

Prominent
Nov 30, 2017
8
0
510
So I realised a little late that ddr3 is incompatible with my new motherboard. To test which hardware is broken I reassembled
My old build... only to get the exact same problem. I am now running..

Asus p8875-V
i5 2000 series CPU
R9 390
8g ddr3 ram

I removed the gpu completely and am plugged into the motherboard. Something I noticed is that a Memok! Switch is now telling me I have problems. Pressing the switch made made the PC reboot several times, with the Memok LED blinking. It eventually just goes back to how it was to begin with, flashing red.

I have tried removing the cmos battery and shorting the pins, still nothing. I have no idea what to do at this point..