Built two of the same PC, neither will display anything

[vaindil]

(Not sure what forum to post this in, sorry.)

This is the build. I've built computers before, I know what I'm doing in general. I'm completely out of ideas here though.

These symptoms are happening on BOTH of the computers I built with these exact components. Everything I write below is happening to both.

When I first built them, the PC would turn on, wait for 30 seconds, then power cycle over and over. I never had anything on my display. I realized that the type of RAM I got wasn't listed on the motherboard's supported list, so I ordered different RAM that is. Now the new RAM is in, and the computer doesn't power cycle anymore but I get nothing on the display. The monitor doesn't detect a signal at all, it's not just a black screen. I know Ryzen doesn't have IGPU, I'm only using the GPU.

I've tried everything I can think of, reseating RAM, CPU, GPU, removing/re-plugging power cables, etc. Nothing works at all. I have no clue what's going on, and any help would be greatly appreciated.

 

[mdark690]

Have you tried plugging the HDMI cable into the motherboard HDMI slot not the graphic card one?

 

[vaindil]

Have you tried plugging the HDMI cable into the motherboard HDMI slot not the graphic card one?

Ryzen doesn't support IGPU, so the motherboard HDMI port won't have any effect. Only the GPU will work.

 

[DRagor]

Can you check what BIOS versions boards have? You can check on ASRock website how to find that.

 

[vaindil]

Can you check what BIOS versions boards have? You can check on ASRock website how to find that.

Looks like it's P3.20. In case it helps, here's the BIOS page for the motherboard.

 

[DRagor]

3.20 should have no problem running any Ryzen, so that is not the cause. Since it hits two machines, it is either a compatibility issue (but I don't see any, maybe RAM but you tested 2 different models already), or something about display connection. Did you reset CMOS after installing new RAM? What display cable you use?

 

[vaindil]

3.20 should have no problem running any Ryzen, so that is not the cause. Since it hits two machines, it is either a compatibility issue (but I don't see any, maybe RAM but you tested 2 different models already), or something about display connection. Did you reset CMOS after installing new RAM? What display cable you use?

CMOS was reset, yes. I'm using an HDMI cable. I have DisplayPort that I could try, I suppose I can do that later today. Not getting my hopes up though. :/

 

[DRagor]

Ok, if that won't work, it takes a few steps back. Remove motherboard from case, and build outside, only necessary parts - CPU, cooler, mobo, stick of RAM, GPU and PSU. If you have access to different model of GPU, use it - sometimes it happens that healthy and compatible GPU will just refuse to work with a given motherboard, for no logical reason.