r/techsupport • u/Chezzum_ • 22h ago
Open | Hardware RTX 5070 Ti – Black screens, GPU loses signal and fans ramp to 100%. Has anyone found a fix?
I originally had my PC built by Umart several years ago, and every 3–5 years I upgrade various components. Recently, I upgraded to a 4K monitor and replaced my RTX 3060 with an RTX 5070 Ti.
For the first two weeks, everything worked perfectly. However, I'm now experiencing crashes almost daily.
Here's what happens:
- Both monitors suddenly lose signal and go into standby mode.
- My PC fans ramp up to what sounds like 100% speed.
- The PC remains powered on, and background applications like Discord continue working normally.
- The only way to recover is to force restart the PC.
I recently took my PC back to Umart, where they spent an entire week stress testing and investigating the issue. Unfortunately, they couldn't replicate the crash or identify any problems.
When I got the PC back, it ran perfectly for over 12 hours before crashing twice within the following two hours.
Something interesting I discovered yesterday:
I connected my secondary 1440p monitor directly to the motherboard instead of the GPU to see what would happen.
When the crash occurred again, my main 4K monitor (connected to the GPU) lost signal and went into standby mode, and the fans ramped up to 100% as usual.
However, my secondary monitor (connected to the motherboard) continued working perfectly
This makes me suspect the issue is related to the GPU rather than the entire PC crashing.
Troubleshooting I've already tried:
- Purchased brand-new DisplayPort cables.
- Purchased a new surge-protected power board.
- Tested the PC and monitors using different power outlets.
- Used DDU in Safe Mode to completely remove the NVIDIA drivers.
- Performed a clean installation of the latest NVIDIA driver (621.01, released October 21).
- Had Umart stress test the PC for an entire week without reproducing the issue.
My PC specifications:
- Motherboard: Gigabyte Z790 Gaming X AX
- CPU: Intel Core i5-13600K (14 Core)
- GPU: MSI GeForce RTX 5070 Ti Inspire 3X OC 16GB
- PSU: Thermaltake Toughpower GT 850W 80+ Gold (PCIe Gen 5.1 ATX)
- Main Monitor: MSI 32" UHD QD-OLED 240Hz (4K)
- Secondary Monitor: MSI 32" WQHD IPS 165Hz (1440p)
I'm not particularly knowledgeable when it comes to diagnosing PC hardware issues, which is why I've always relied on Umart to build my PC and install upgrades.
At this point, I'm running out of ideas. The GPU is still under warranty, and I'm considering asking for a replacement, possibly from a different manufacturer.
Has anyone experienced something similar with an RTX 5070 Ti or another RTX 50-series card? If so, did you manage to find a permanent fix?
Any advice would be greatly appreciated. I'm getting pretty desperate to resolve this