Main monitor goes purple/pink while 2nd monitor stays fine.

[Amuzie]

I run a dual screen setup with one of the screen connected trough HDMI and the other one DVI. And sometimes (Almost always when starting a youtube video in fullscreen mode) My main monitor (The hdmi one) goes mental. The bottom of the screen is a solid pink/purple and the top is full of pink/purple vertical lines. But my second monitor (The DVI one) is fine with no sign whatsoever. Is this issue because of my graphics card or the hdmi?

Specs:
Proccesor: I7 860 2.8ghz

8GB RAM

Graphics card: AMD radeon r9/hd7900 series 3gb.

motherboard: Gigabyte P55a ud4

OS: Windows 7 64bit

 

[Darkbreeze]

Try a different cable or a different output if you monitor supports more than one input type. If neither of those correct the issue, then test the output from that cable with a different monitor and replace the monitor as necessary.

 

[Amuzie]

Try a different cable or a different output if you monitor supports more than one input type. If neither of those correct the issue, then test the output from that cable with a different monitor and replace the monitor as necessary.

First of all thanks, will try what you mentioned. Although it's a bit hard to say if it will work or not because it happens randomly. Could it be related to the graphics card in some way?

 

[Darkbreeze]

It could, it's possible, but it's a lot more rare for one of the GPU card outputs to fail than it is for the whole card to do so. Since it's on only one display, I'd look at the cable and display first, and then narrow it down to the output on the card if all else passes muster. Do both your monitors have HDMI and DVI? If so, switch the connections and see if the other monitor begins having the same issues. If it does, then you know it's either the card or the cable.

 

[Amuzie]

Funnily enough my main monitor has a HDMI and RGB while my second monitor has a DVI and RGB. But I've swapped the HDMI cable and I'll see if anything happens and report in a day whether anything has happened or not.

 

[Darkbreeze]

RGB=D-sub. If you have a VGA D-Sub cable, you could try that as well if it does it again even after swapping out the HDMI cable.

 

[Amuzie]

It happened again. But this time I tried disconnecting my main monitor the HDMI one, and then the flickering kept going on my second screen, the DVI one which in this case began flickering as soon as it became my main monitor.

 

[Darkbreeze]

What is the model number of your power supply?

 

[Amuzie]

Can't see a Model number. But the model is a CMPSU-750TX

 

[Darkbreeze]

Same thing. That was a very good unit, when it was new.

It's probably getting a bit long in the tooth now unless you've purchased old stock on that unit recently. Clearly the monitor and cable are not to blame, so I'd suspect that it's either the PSU or graphics card. Do you have another graphics card or power supply you can swap in for testing?

 

[Amuzie]

Not right now but when i opened up my computer which I recently cleaned but missed the PSU somehow I noticed quite a large ammount of dust in the PSU fan, could that cause an issue?

 

[Darkbreeze]

Yes. Get a can of compressed air and blow out the PSU, the CPU fan heatsink and then the rest of the case as well. You will want to use a small, thin, plastic or wood object, anything not metal, to hold the fans still so they don't spin up while blowing out the PSU and CPU heatsink. If your PSU is getting hot from junk inside it, that would be a possible cause. But it might not be THE reason. I'd still do it. Probably on a regular basis about once every month or two it's a good idea to blow things out with compressed air if you don't have a case with filtration.

 

[Amuzie]

Cleaned the PSU so now the computer is clean. Let's hope it helps. If it happens again I'll take a picture.

 

[Darkbreeze]

I don't need a picture. I know exactly what you are talking about, it's just that there are many things that can cause a display to produce pixelated, lined, discolored or distorted presentations, and not all of them are what you'd think. Faulty memory, problems with the CPU or bent CPU/Motherboard pins, insufficient or high ripple/noise power, faulty PCI slot or PCI circuit on the motherboard, problems with the graphics card itself, faulty cabling or a faulty display can all cause similar issues.

See what it does and let me know if it's still doing it.

 

[Amuzie]

Will do. Will take about 24 hours though, it's late and have to work tomorrow and then do the testing. So about a day.

 

[Darkbreeze]

That's ok, just get back to me when you know something.

 

[Amuzie]

Ok now it's getting creepy. It worked perfectly fine for about 5 hours. And then I started playing a youtube video, nothing special. But this youtube video is part of a series that a youtuber does, and this series has made this error happen about 80% of all the errors occurrences, which is creepy. And this time the colour wasn't purple/pink but more red lines and gray bottom.

 

[Darkbreeze]

Go into your browser settings and turn off hardware acceleration.

 

[Amuzie]

Done that now. How can it come it only occurs on a specific youtubers videos? Seems very odd.

 

[Darkbreeze]

It might be just a problem with his video files and they don't agree with the codecs on your system. You might try installing VLC media player, just to get the updated codecs, and see if that helps. If turning off hardware acceleration in your browser didn't correct the problem, then I'd go back and enable it again.

 

[Amuzie]

A whole day without any problems. Will give it another day though.

 

[Darkbreeze]

 

[Amuzie]

2nd day and nothing has happened. The computer is running fine with no glitches in sight. Going to count it as solved.

 

[Darkbreeze]

Nice. Well, glad it worked out. Good luck to you Amuzie.

 

[Amuzie]

Oh sorry I forgot to thank you for the help, sooo thanks appreciate it greatly.