New PC, fans work, but nothing shows up on screen

[NORWSTELN]

Hello.

I just finished building a new PC and ran into an issue. When I turn it on, all the fans work, but absolutely nothing shows up on the monitor. I can't even enter the BIOS.

The wires are attached properly (24-pin and 4-pin connectors from the PSU to the motherboard, 2x6-pin connectors to the GPU, 4-pin CPU fan and all the connectors from the case).

Frankly, I have no idea what to do next.

Here are the specs:

Motherboard: ASRock FM2A78M-DG3+
GPU: Gigabyte Radeon R9 270 2GB (GV-R9270OC-2GD)
CPU: AMD Athlon X4 860K Black Edition
RAM: 8GB DDR3-1333 CL9 240-pin UDIMM Kit (2x4GB) (HX313C9FK2/8)
PSU: Chieftec CTG-650C

Any help would be much appreciated.

P.S. I have read and followed the steps in that "PERFORM THESE STEPS" thread. That didn't help.

EDIT: I did try putting the GPU and both RAM sticks into another PC. They seem to work. So maybe the issue is with the motherboard or the CPU?

 

[ZeroGravity780]

Have you tried all your display ports on the gpu?

 

[NORWSTELN]

It has two DVI ports, but I can only connect to the first one. The second requires a slightly different connector.

EDIT: I mean it has a DVI-I port and a DVI-D port. I can only connect to the DVI-I port. Would connecting to the other change something? I would have to go and buy the necessary cable to be able to connect.

 

[Bossyfins]

Refer to this, and do the checklist. Report back if you succeed

 

[NORWSTELN]

As I said, I already went through that list. Nothing helped.

 

[ZeroGravity780]

Id say if they both worked on another motherboard is probably a bad PCIE slot. Did you try the 8x slot?

 

[NORWSTELN]

This motherboard doesn't have one. There's one PCI Express 3.0 x16 and one PCI Express 2.0 x1.

 

[Bossyfins]

Do the PSU Paper clip test

 

[NORWSTELN]

The PSU seems to be working fine.