Weird graphics error on boot-up

[ComLing]

Hey there!

A week ago, I heard a bang-like noise from my PC and the screen went black. When trying out another screen, just to be sure, I was greeted with this screen issue on boot-up:

I suspected my graphics card to be at fault at first and replaced it. When the issue didn't go away, I checked through and replaced the RAM, and when it wasn't gone after that, I replaced my mainboard. As you can probably guess by me making this post, the exact same issue still greets me on every boot-up. I can't access the BIOS like this and I don't get any error beeps, either. (To check if for some reason the speakers don't work, I started everything up without the GPU and actually did get the appropriate warning beeps.)

By now I'm just completely lost on where the error may be. Do you have any ideas?

EDIT: Turns out it was indeed the monitor being faulty. So far everything runs fine and dandy on a replacement monitor via DVI, I'll add in the results for HDMI on the R9 as soon as I have them. All that's left is to run memtest, since my Windows partition doesn't seem to be fond of all the screwing around. My Linux partition runs just fine. Thanks for the help, I don't think I would've figured out it was the monitor without writing it out!

Here are my relevant specs, if that helps with anything:
Mainboard: MSI 970A-G43, AMD 970
CPU: AMD Piledriver FX-4300, 4x 3.8GHz
GPUs (that I tested with): AMD Radeon R7 260X 2GB / AMD R9 Nano, 4 GB
RAM: 8GB Corsair Vengeance DDR3-1600 (2x 4GB)

 

[Barty1884]

You've tried a different display/monitor/tv?

Have you tried connecting via different methods? DVI, HDMI, DP etc?

The issue (visually) screams either monitor, GPU or motherboard......but you've replaced all of those & the issue persists. You've also replaced your RAM, so the common denominators are your CPU and PSU.

Things that go "bang" audibly would be capacitors......either motherboard or PSU. Given you've replaced your motherboard....... What is your PSU? Make and model. You didn't list that in your spec.

 

[ComLing]

You've tried a different display/monitor/tv?

Have you tried connecting via different methods? DVI, HDMI, DP etc?

The issue (visually) screams either monitor, GPU or motherboard......but you've replaced all of those & the issue persists. You've also replaced your RAM, so the common denominators are your CPU and PSU.

Things that go "bang" audibly would be capacitors......either motherboard or PSU. Given you've replaced your motherboard....... What is your PSU? Make and model. You didn't list that in your spec.

Thanks for the quick reply! By now I'm suspecting the monitor to be the culprit, I'll get a replacement monitor to try on the old R7 later this evening. So far I could only try HDMI because of a lack of adapters, but I'll get to try DVI with the replacement monitor tonight.
If that's not yielding any results, my best bet would be to get a new monitor, I suppose.

My PSU is a 400W BeQuiet! SystemPower 7 - I'm not an expert on PSUs, but shouldn't I have more issues on boot if that's broken? That's why I neglected posting it in the intial specs, sorry about that.

Edit: The reason I'm suspecting the monitor is because the monitor I usually used broke down (coincidentally at the time of the bang, which ... makes me feel really dumb now, wow) and the replacement monitor I'm using right now isn't something I ever tested the HDMI port on before, so I'm not convinced that it would actually work.