Black screen when monitor is plugged into dvi port

[Bennyboy]

My screen disconnects randomly within 30 mins of being connected to graphic card ports (works perfectly when running through motherboard).

I have:
Gigabyte Geforce GTX 970 Mini ITX OC
GA-h97-gaming 3
intel core i5-4590 3.30ghz
8g ram
thunder 600w power supply
windows 10 64-bit

Its running perfectly up till it disconnects and I don`t believe its overheating (cleaned entire PC 3 times to make sure, replaced thermal paste/pads and the CPU seems to spike just before it disconnects while temperature remains around 30-40)

I have tested it with a monitor and a TV and with different cords (unfortunately I don`t have another PC to test it on, but I`m fairly certain its the graphics card as it works no problem when running through the motherboards connectors)

I`ve updated drives and bios (this seemed to improve how long it lasted on average but disconnect still happens)

These problems started to happen after a corrupted windows 10 update that resulted in a clean install (don`t know if that is pure coincidence but thought it was worth mentioning, as everything was working fine leading up till that)

I don`t think the card is broken as it works perfectly fine (no loss of frame rate or bugs) till it suddenly disconnects, which also results in the motherboards connection cutting out as well which the graphics (tried using dual monitor to test this, it seems that once I trying running the monitor through the graphics card it cuts the connection for the motherboard as well, but if i only run the monitor though the motherboard i have no problems what so ever besides not being able to use my graphics card)

I was thinking maybe someone has experienced this problem and found a solution? my warranty run out a while ago and the fact that its still works perfectly up till the disconnect makes me think there is a solution to this issue other than buying a new graphics card because i really don`t want to pay $150 - $300+ if there is a possible way to fix this. Id really appreciate any ideas anyone has as i`ve gone through nearly every solution i`ve come across

[Bennyboy]

thing is that it was all working fine before this update, i just cant wrap my head around it, when it disconnects the pc is still running (fans,lights), and i tried testing some games before it disconnects and they work perfect no lag or frame loss

[𝔇ave]

well idk man..if it were me i'd bite the bullet and buy a new psu since they don't cost all that much and it's something you should probably replace anyway given the one you have is sorta gettin old and not a very good model to begin with

[Porky Pig]

Do a sfc /scannow

Maybe it's a corrupt driver.

[Bennyboy]

did the scan and no corrupt drivers, and yea it is getting to the point where its not a bad idea to replace the psu, but i dont want to go out and get one if it isnt gonna solve this problem, because like i said before everything was working fine and now it isnt

[𝔇ave]

Ursprünglich geschrieben von Bennyboy:

did the scan and no corrupt drivers, and yea it is getting to the point where its not a bad idea to replace the psu, but i dont want to go out and get one if it isnt gonna solve this problem, because like i said before everything was working fine and now it isnt

i get what you are saying.. i would be hesitant to run out and buy new parts considering it worked before.. but it's hard to say that it's an issue with the graphics card simply by the fact that it works fine on the IGPU.. the Integrated GPU and the dedicated GPU put very different loads on the PSU.. since your PSU has only one 12v rail (i assume) that means it has to supply power on that 12v line to both the CPU and the GPU.. it could be that it just can't provide enough power on that line anymore.. one would assume that if the rail was "overloaded" even briefly that the whole system would shut down but this might not be the case.. perhaps the GPU is more sensitive to voltage drop and craps out first.. just a theory but if it were me i would be buying a new better PSU.. if it turns out that isn't the problem and it is a GPU problem then at least you have a shiny new PSU to power the replacement GPU and not have to worry about it getting shotty power from an old PSU..

[Supafly]

Ursprünglich geschrieben von Bennyboy:

did the scan and no corrupt drivers, and yea it is getting to the point where its not a bad idea to replace the psu, but i dont want to go out and get one if it isnt gonna solve this problem, because like i said before everything was working fine and now it isnt

Get a new one and be careful not to damage it when proceeding.
Take side off case and leave PSU outside
Connect the new PSU to components.
Use system with new PSU connected. If issues still occur return it. If it solves the issue take out the broken PSU and install New PSU properly.

EDIT: Could try running OCCT PSU test. If it crashes within an hour of test the PSU is 100% faulty. It still could be faulty if it doesn't crash but least you'll know if it is faulty without question if it does.

[Porky Pig]

"My screen disconnects randomly within 30 mins of being connected to graphic card ports (works perfectly when running through motherboard)"

I don't understand this.

[edit]

if you mean the on-board GFX works, then it's your Discrete GFX card that's the problem

[𝔇ave]

Ursprünglich geschrieben von sjohn29:

"My screen disconnects randomly within 30 mins of being connected to graphic card ports (works perfectly when running through motherboard)"

I don't understand this.

it means the system works normally when using the IGPU..

what i conclude from this is that

A- the dedicated DGPU is toast or
B- the PSU is toast

personally i would rather plug a faulty gpu into a new psu than plug a new gpu into a faulty psu..

[Supafly]

Ursprünglich geschrieben von sjohn29:

"My screen disconnects randomly within 30 mins of being connected to graphic card ports (works perfectly when running through motherboard)"

I don't understand this.

[edit]

if you mean the on-board GFX works, then it's your Discrete GFX card that's the problem

The dedicated GPU uses more power than the onboard iGPU so it can still be PSU related.

[Porky Pig]

I don't know, if it was the PSU that was at fault, it would be cutting out regardless.

hope you find a solution Bennyboy

All the best

[Bennyboy]

thanks for the help i really appreciate it, ill get a new psu and test it, even if thats not the fix im looking for aleast i got a new and spare psu like you said, ill update the results when i get it

[hawkeye]

When something stops working due to a change, then it's usually the change that caused the problem. So the problem appears to be related to whatever happened with the clean install.

With a clean install (which means wiping everything and starting with a clean system) you still have to set up the power plan, nvidia control pabel etc and install gpu drivers etc.

If all this has been done, the next step is to test hardware.

black screen usually means driver crash.
gtx970's are known to be temperamental regarding 12V ripple. The amount of ripple can increase as power draw increases. Overclocking a gpu increases the power draw which can increase the ripple to an unacceptable level but overclocking can also makes the card less stable. Could also be a flaky driver.

So to test this, load up msi afterburner and reduce the max power load to 80% of normal or turn off the overclock. If it doesn't crash the gradually increase the load.

If you want to overclock gpus then a high quality psu is recommended. Look for reviews of the thunder to see how good it is, especially with the 12V rail.

But this doesn't explain why a windows reinstall created the problem. So there could be something that you have missed doing or tried like increasing the overclock or installing a different driver version than the one that worked before.

[Bad 💀 Motha]

Ursprünglich geschrieben von Bennyboy:

sorry the power supply is a cooler master "thunder" 600w about 4-5 years old

Junk, replace it