No Display from GPU (GTX 1080 Ti)

PC Specs
• CPU: Intel i7-8700K
• Motherboard: MSI Z370
• GPU: Zotac GTX 1080 Ti Dual Fan
• PSU: Thermaltake Toughpower GX1 700W (non-modular)
• OS: Windows 11

⸻

Problems
• Normally, when my PC idles, the monitor enters power-saving mode (screen off) but audio (Spotify) still plays.
• today, when I moved my mouse to wake the display, the screen didn’t turn back on.
• PC was still running (I could blindly navigate with keyboard, even shut it down).

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Symptoms
• On restart with GPU connected:
• No display signal → monitor goes into power-saving mode.
• GPU logo light turns on.
• But GPU fans don’t spin at all (on primary PCIe slot).
• When connecting monitor to onboard graphics (iGPU):
• PC boots fine, Windows loads normally.
• Device Manager only shows Intel iGPU, no NVIDIA card.
• NVIDIA driver installer → error: “No compatible hardware found.”

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Troubleshooting Done:
1. Checked display cables & ports
• Tried both HDMI and DisplayPort.
• Tried multiple GPU output ports.
• Monitor works fine on iGPU.
• No signal from GPU.
2. Driver cleanup & reinstall
• Booted into Safe Mode using iGPU.
• Used DDU to remove old NVIDIA drivers.
• Tried reinstalling NVIDIA drivers → installation failed (GPU not detected).
3. GPU reseating
• Reseated GPU into PCIe slot.
• After reseating, one time I can briefly see Windows boot logo before it goes black.
• But still no display in Windows.
4. Power connections
• GPU requires dual 8-pin connectors (from a split PCIe cable).
• Reseated power cables.
• GPU logo lights up, but no fan spin in main slot.
• PSU is non-modular, but it have2 PCIe cables, so I use another dual 8-pin connector to connect. GPU lights up but still no display
5. Tested different PCIe slots
• In primary PCIe x16 slot → GPU fans never spin, only logo LED lights up.
• In secondary PCIe slot (x8/x4) → both GPU fans spin briefly at startup, then stop (normal fan-stop feature).
• But still no display output, and GPU not detected in Windows.
6. Other checks
• Monitor + cables confirmed working with iGPU.
• PC boots into Windows fine on iGPU.
• GPU still not visible in Device Manager.

⸻

Current Status
• GPU gets power (LED logo on).
• In second PCIe slot, GPU fans spin briefly (normal), then stop.
• No display output from GPU on either slot.
• Windows does not detect NVIDIA GPU at all.
• Only Intel iGPU is working right now.

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I don’t have spare PC, GPU and PSU to do further testing. That all I can do for now

Any advice or similar experience would be greatly appreciated. 🙏

85%
1. VRM. got light, but FAN cant even move.
2. Device manager cannot see GPU.
3. VRM fried, or broken circuit on GPU.
15%
PSU Issue. very unlikely.
Modern PSU can run with minimal power. at least when boot. even some dead vram
15% chance your PSU cant even supply enough power to GPU.
1080TI... Might not worth to repair it.

it even quite FAR behind a very humble 6600xt ( which is sitting around RM500 in used market )

Don't blame your GPU just yet. Gpus are guilt to last until you die also GPU still alive.

You try your cmos Batery. Get an old one from your old motor n try see if it will work or not.

Secondly your ram how many slotsof ram you have. You try cabut the cheapest one if all expensive then cabut anyone. Just leave on to run the pc enough.

Oh before that. Your GPU got light? Or the entire mobo got light? If not check your psu connection to mobo. Psu also can be the issue.

Normally if this happens to me I cabut the hard one by one n see if anyone malfunctioned

Additional Context (Recent Behavior)
• For the past ~2 weeks, when GPU is installed, I need to press and hold the power button for 30–60 seconds before the PC powers on.
• Initially suspected case power button issue

(Now)
With iGPU display connected (GPU not driving monitor):
- GPU has power (logo lights up, PCIe LED on).
- Both GPU fans spin briefly, then stop.
- In Device Manager → GPU not detected.

With GPU connected to monitor:
- Same behavior (lights on, fans spin briefly, then stop). But no display.

No display signal at all.
• does this suggests issue is related to GPU (possible short or fault) or PSU struggling under GPU load?

Your PSU is how many watts n your GPU requirement is how many watts?? 🤔🤔

•Normally, when my PC idles, the monitor enters power-saving mode (screen off) but audio (Spotify) still plays.
• today, when I moved my mouse to wake the display, the screen didn’t turn back on.
• PC was still running (I could blindly navigate with keyboard, even shut it down).

Nvidia newer drivers are buggy these days.
Power off your monitor and turn it back on.

Your PSU is how many watts n your GPU requirement is how many watts?? 🤔🤔

Just disassembled the card to inspect and see any pregnant capacitor, burn marks or explode chips, just visually inspect with my eye.

eye cannot . even legend cant do it with EYE.

you need multimeter.

test from point to point for VRM, mosfet...

If cant do , easiest way = test this GPU on a healthy machine.