Monitor suddenly turns black (no signal) but everything is still running

Joostd66

Prominent
Jul 17, 2017
2
0
510
Hello everyone,

I've recently built my first PC and I'm running into some problems that I can't figure out, so I thought maybe someone here was willing to help me out.

So here's the thing: My monitor sometimes suddenly turns black showing "no signal" when I'm playing games. All my fans are still running and so is my GPU, all the lights are still working as well and I'm still hearing game sounds but I don't think I can influence the games anymore. I've tried using Caps Lock but the light on my keyboard doesn't turn on, I've read on this some site that its a sign my mobo isn't working properly but I'm still not sure.

When this happens I usually shut down my PC by holding down the power button and just restart it. Most of the times it works fine after that, but sometimes my fans and GPU won't turn on no matter how many times I try, the light on my mobo will turn on and so will the one on the front of my case (I've added some pictures). If this happens it won't turn on correctly until I wiggle some of the cables. That's why at first I thought it could've just been a loose connector or something but its been happening more frequently recently so I got concerned. This has been happening randomly too, like when I came back from school without having even touched my PC that day.

http://static.ccm2.net/ccm.net/pictures/ncNhxOE3Qb2B7OFY2WzQl4ZeWaMbDCMOebwb349PLQrkqw0RlnkMxtIzQzYVGpfN-img-20170624-111743.png

http://static.ccm2.net/ccm.net/pictures/k0QhgkNjgxqHQcTEKLQpZgAPllSh4uhCdLfYuh89l6lSGDq4JVPCSjvwLklGscRT-img-20170624-111756.png
As you can see, no gpu or fan running just some LEDs.

My specs:
Intel Pentium G4560
MSI B250M PRO-VD
MSI Radeon RX470 GAMING X 8G
Crucial DDR4 8GBx2 2400
Western Digital Blue WD10EZEX 1TB
Corsair Builder CX430 Bronze

Regards,
Joost

EDIT: So it just happened again and I tried plugging the DVI directly into the mobo but I still had a blackscreen.. Don't know if that is any help?
 

Joostd66

Prominent
Jul 17, 2017
2
0
510


First of all, thanks for the reply!

https://www.msi.com/Graphics-card/Radeon-RX-470-GAMING-X-8G.html#hero-specification
On this site it says the recommended PSU is 450W, and I have 430W so is that the problem?
I calculated the power I needed for the PC and from what I can remember 430W was sufficient.
 

alexison_fire

Prominent
Oct 18, 2017
1
0
510


are you using a vga to hdmi display adaptor? if yes it might the one causing the problem..