[SOLVED] GTX 970 has no output on startup ?

[Yragael]

So I have a Zotac GTX 970 dual that had never shown anything concerning until a couple of days ago. I turned of the PC and when I turned it on there was not output at all since the time I pressed the button. I switched on onboard graphic card display to see what was wrong and the card was not present in the device manager. I noticed that the graphic card's fans were turning. I turned off the PC, cleaned the port on the mainboard, the contacts on the card, tested the PSU with a voltmetre (it was 12v for both cable), reinstall the graphic card on the mainboard, restarted the PC and everything worked fine.

The card was working properly, not hot, etc. until the next cold boot, same story, I went throught the same cycle and it worked again. The cycle repeated a bout five times until I tried to install an old GTX 770 (belongs to a friend, I have to return it soon) which works without any problem. SO the problem certainly comes from the GTX 970.
I have reflashed the VBIOS to an older version then back to the lastest version same problem. There are no electronic shops around where I live . Do you think there is no hope?

My PC spec's
GPU : Zotac GTX 970DUAL 4gb
CPU : i7-3770k
Ram : 12 gb (PC3-10700)
Mainboard : 1155 H61-Plus
PSU : AeroCool Superb 600W

 

[Koekieezz]

So I have a Zotac GTX 970 dual that had never shown anything concerning until a couple of days ago. I turned of the PC and when I turned it on there was not output at all since the time I pressed the button. I switched on onboard graphic card display to see what was wrong and the card was not present in the devie manager. I noticed that the graphic card's fans were turning. I turned of the PC cleaned the bort on the mainboard, the contacts on the card, tested the PSU with a voltmetre (it was 12v for both cable), reinstall the graphic card on the mainboard, restarted the PC and everything worked fine. The card was working properly, not hot, etc. until the next cold boot, same story, I went throught the same cycle and it worked again. The cycle repeated a bout five times until I tried to install an old GTX 770 (belongs to a friend, I have to return it soon) which works without any problem. SO the problem certainly comes from the GTX 970.
I have reflashed the VBIOS to an older version then back to the lastest version same problem. There are no electronic shops around where I live . Do you think there is no hope?

My PC spec's
GPU : Zotac GTX 970DUAL 4gb
CPU : i7-3770k
Ram : 12 gb (PC3-10700)
Mainboard : 1155 H61-Plus
PSU : AeroCool Superb 600W

Maybe try to disconnect from internet, Uninstall nvidia driver using ddu (clean and do not restart), reflash the bios, then reboot, and try to install the driver, after that, install firmware update for DP (might help since i saw some user have this kind of problems too).

could you attach the gpu bios here? maybe i could try to update the gpu GOP to the latest, then you could proceed with the steps i suggest above.

 

[Yragael]

I don't know if I can insert a file here but a link seems to be ok.

https://www.techpowerup.com/vgabios/178603/zotac-gtx970-4096-150122-1

The direct link to the last VBIOS

https://www.techpowerup.com/vgabios/178603/Zotac.GTX970.4096.150122_1.rom

 

[Koekieezz]

I don't know if I can insert a file here but a link seems to be ok.

https://www.techpowerup.com/vgabios/178603/zotac-gtx970-4096-150122-1

The direct link to the last VBIOS

https://www.techpowerup.com/vgabios/178603/Zotac.GTX970.4096.150122_1.rom

Okay, so now you disconnect from internet, Uninstall nvidia driver using ddu (clean and do not restart), reflash this bios, then reboot, and try to install the driver, after that install firmware update for DP, and reboot again and connect to internet.

 

[Yragael]

So I did everything as instructed and tested it for few hours. Eventually it did not work and the problem is still the same. However, I have noticed that when I replaced the GTX 970 it worked fine each time I rebooted or cold restarted UNTIL I have the PC turned off for several hours. Then, at the next boot there is no display, from the GTX 970. With a balck screen I can enter the UEFI and when I switch to the onboardgraphic card there is a display. That makes me think it's not a driver issue. The VBIOS was a good lead but it looks like it's something else. Since the mainboard and the PSU are working fine I would think it's something on the GTX 970 like a dying capacitor or something like that. Unfortunately there is no electronic shop around me.

 

[Koekieezz]

So I did everything as instructed and tested it for few hours. Eventually it did not work and the problem is still the same. However, I have noticed that when I replaced the GTX 970 it worked fine each time I rebooted or cold restarted UNTIL I have the PC turned off for several hours. Then, at the next boot there is no display, from the GTX 970. With a balck screen I can enter the UEFI and when I switch to the onboardgraphic card there is a display. That makes me think it's not a driver issue. The VBIOS was a good lead but it looks like it's something else. Since the mainboard and the PSU are working fine I would think it's something on the GTX 970 like a dying capacitor or something like that. Unfortunately there is no electronic shop around me.

Could be that, what's your mobo anyways? did you run the mobo on CSM disabled and use full UEFI?

 

[SkyNetRising]

I would think it's something on the GTX 970 like a dying capacitor or something like that.

That's exactly, what I was thinking.

Boot your pc from cold boot. Keep it on for a few minutes (with no signal from GPU).
Then reboot it with reset button.

See, if you get signal on GPU after this.

 

[Yragael]

That's exactly, what I was thinking.

Boot your pc from cold boot. Keep it on for a few minutes (with no signal from GPU).
Then reboot it with reset button.

See, if you get signal on GPU after this.

It works that way. It looks like a dying capacitor is somewhat recharging/heating when the PC is on with no output from the graphic card and after a reset or I connect the VGA cable on the onboard graphic card to reboot the machine, it works. Until I let the PC off for a while, few hours.

 

[SkyNetRising]

PSU : AeroCool Superb 600W

Is it this PSU? It has only 230W on 12V rail.
Garbage. Replace it.
GTX 970 requires good quality 500W PSU.

 

[4745454b]

You forgot the link.

https://www.advice.co.th/product/power-supply/400w-750w-full/power-supply-full-600w-aerocool-superb

Looking at that I have to agree with Skynet. Under both 12V rails it shows 230W available. That's really a 400W PSU at best, a 250W PSU for the modern world. I'm shocked it's lasted as long as it has. Replace, see if your problem gets better.

Edit: Replace with a real PSU. Not a unit like you have.

 

[Yragael]

Actually, removing the GPU again I checked the PSU and it's not an Aerocool 600w "superb". It's a KCAS-700w of the same brand. It says 636w on the 12v rails.
I don't know why the hell I thought it was a Superb. My bad.