Is this a malfunctioning graphics card?

[ninjakarlsej]

Hi all!

I was sat playing L.A. Noire when both my monitors went full on rainbow on me (video down below). I turned off my computer, checked the cables and turned it back on, it seemed fine for 2-3 minutes until it happened again. I'm quite certain it's not the cables since I use both HDMI and VGA (second monitor is old). My PC is around 6 years old while my graphics card is about 4 years old, it's an EVGA GTX 780 SC.

Since it doesn't happen on startup, I'm unsure if it's actually the graphics card failing. If anybody has a suggestion for a fix or anything useful please tell me

My full specs are as follows:

• 
  Motherboard: ASUS Z87-K
  CPU: i5-4670K 3.40 GHz (3.80 GHz boost) with an Asetek 510LC liquid cooler
  GPU: EVGA GTX 780 SC with ACX cooler
  RAM: 2x4GB G.Skill Ripjaws Gaming 2133 MHz
  Soundcard: Creative SB X-Fi Xtreme Audio
  HDD: Seagate 500 GB 7200 RPM + 500 GB External
  PSU: CoolerMaster GX 650W bronze
  OS: Windows 10 Home 64-bit

This is what it looks like on startup:

Here's a video of it happening: [video="https://www.youtube.com/watch?v=NGBXhTFcdTo"][/video]

 

[Finstar]

That's a dead gpu no doubt.

 

[ninjakarlsej]

That's a dead gpu no doubt.

Yeah that's what i thought too, it hasn't happened for the last 5-10 minutes now though so I'm really not sure.

 

[Finstar]

That's a dead gpu no doubt.

Yeah that's what i thought too, it hasn't happened for the last 5-10 minutes now though so I'm really not sure.

I have an old gtx 660 which does this same thing, it might work for even an hour but then the screen starts flashing with colors.

 

[ninjakarlsej]

That's a dead gpu no doubt.

Yeah that's what i thought too, it hasn't happened for the last 5-10 minutes now though so I'm really not sure.

I have an old gtx 660 which does this same thing, it might work for even an hour but then the screen starts flashing with colors.

Well f*ck me then hahaha, thanks for the input mate

 

[Dunlop0078]

GPU temps under load? Make sure you have the latest GPU driver installed for the 780. If you do and temps are okay, then you can try underclocking the card, it is degrading it is not "dead".

 

[ninjakarlsej]

GPU temps under load? Make sure you have the latest GPU driver installed for the 780. If you do and temps are okay, then you can try underclocking the card, it is degrading it is not "dead".

Should i just put the clock speed down a bit? I've never really done any overclocking or underclocking. It's never over 80 degrees celsius.

 

[Dunlop0078]

Yeah, I would try underclocking the GPU core by 25-50mhz to start. Also memory by say 50mhz. This should not affect performance notably. You can use msi afterburner to do this, I would also set up a custom fan profile to allow the fans to ramp up higher and keep the card a bit cooler this can also be done in msi afterburner.

 

[j19861986]

Try clock down your VRAM

 

[jaslion]

GPU temps under load? Make sure you have the latest GPU driver installed for the 780. If you do and temps are okay, then you can try underclocking the card, it is degrading it is not "dead".

Should i just put the clock speed down a bit? I've never really done any overclocking or underclocking. It's never over 80 degrees celsius.

A small downclock can keep a malfunctioning card running for a bit longer whilst you look for a new one.

 

[ninjakarlsej]

Yeah, I would try underclocking the GPU core by 25-50mhz to start. Also memory by say 50mhz. This should not affect performance notably. You can use msi afterburner to do this, I would also set up a custom fan profile to allow the fans to ramp up higher and keep the card a bit cooler this can also be done in msi afterburner.

Thanks, I already use a custom fan profile in MSI Afterburner, I can't get it any lower than 70-80 degrees (in some games), but I'll try underclocking it. My pc has been running for about 2 hours idle now with no problems