i7-7700k shows no signal in the RealBench stability test (function operational)
i7-7700k shows no signal in the RealBench stability test (function operational)
Hi!
I recently overclocked the 7700k to 4.8GHz at 1.25v (XMP 3200).
During RealBench, around the 5-10th minute, my monitor stopped working (no signal), but the test continued functioning.
I still notice the CPU and GPU fans running at high speeds, matching their previous levels when the screen was off.
Occasionally the screen fails to shut down completely, yet I managed to pass the test for up to 8 hours without using MSI Afterburner.
Other benchmarks like Linx, Prime95, and AIDA64 all performed well.
Only BSODs or abrupt restarts occurred when running at low voltages.
GPU-only tests (Furmark, 3DMark Firestrike Extreme, Unigine Heaven) also passed.
- RealBench version used: 2.44
- DP cable re-plugging didn’t help.
- The DP cable is fine (tested on another device).
- MSI Afterburner and RTSS aren’t running now, though they were installed recently—I’m not sure if their absence affects stability.
- CPU peak temperature reached 75°C (Linx test).
- GPU peaked at 60°C during the 8-hour RealBench session.
- I’m using the latest Nvidia drivers.
My setup includes:
Noctua NH-U14S
3200 Corsair LPX RAM 2x8
MSI Z270 Gaming M5
Seasonic X750
MSI 1080 GTX
When I return home, I plan to:
1. Use the previous NV driver version (link provided).
2. Completely uninstall MSI Afterburner.
3. Run tests with internal CPU graphics (no GPU installed).
4. Lower RAM frequency.
5. Perform a test without any overclocking.
6. Disable RealBench and treat it as a stability tool.
7. ...?
Uncertain what else might trigger this issue.
UPD. In the system journal, I found this error:
nvlddmkm code 13
Graphics SM Warp Exception on (GPC 3, TPC 0): Out Of Range Address
Sadly, nothing seems to work.
I went back to the previous NV driver, removed MSI Afterburner, and turned off any OC settings. However, I now understand this only occurs under very high CPU usage (not just during RealBench or IBT). The NV driver crashes with numerous errors:
Code: nvlddmkm code 13
Graphics SM Warp Exception on (GPC 3, TPC 0): Out Of Range Address
The computer still functions and tests pass. Only the NV driver fails, suggesting it lacks sufficient CPU power to operate correctly.
I believe this issue belongs in another thread, not related to overclocking.
Maybe HWMonitor or another tool is asking for GPU driver info, causing the driver to lag or stop responding due to CPU load, leading to crashes.