What is NVIDIA-NVLDDMKM-CRITICAL?
NVIDIA-NVLDDMKM-CRITICAL is a critical-severity graphics card (GPU) problem. A critical failure in the NVIDIA kernel-mode display driver (nvlddmkm.sys). This is more severe than a standard TDR event — the driver cannot recover and triggers a system BSOD. This commonly occurs with corrupt driver installations, hardware memory errors in VRAM, or PCIe power delivery issues. Follow the steps below to fix it.
Common Causes
- Corrupt NVIDIA driver installation
- VRAM hardware fault
- Inadequate PCIe power connector
Step-by-Step Fix Guide
-
1
DDU clean driver removal in Safe Mode
A clean DDU reinstall resolves driver corruption issues in most cases.
-
2
Reseat PCIe power connectors
If the error persists after clean install, hardware VRAM testing is required.
-
3
Run OCCT VRAM stress test
"Run OCCT VRAM stress test" targets VRAM hardware fault, one of the documented causes of NVIDIA-NVLDDMKM-CRITICAL.
Commands & Diagnostics
bcdedit /set safeboot minimal
Frequently Asked Questions
NVIDIA-NVLDDMKM-CRITICAL is most often triggered by corrupt NVIDIA driver installation. Other reports point to VRAM hardware fault and inadequate PCIe power connector as contributing factors.
The fastest fix is "DDU clean driver removal in Safe Mode". Only move on to the later steps if NVIDIA-NVLDDMKM-CRITICAL keeps coming back.
NVIDIA-NVLDDMKM-CRITICAL is rated critical severity in our database. It's worth acting on quickly rather than letting it recur.
Usually. NVIDIA-NVLDDMKM-CRITICAL is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Yes — GPU or memory overclocking is one of the most frequent triggers for NVIDIA-NVLDDMKM-CRITICAL. Try resetting your GPU to stock clocks using MSI Afterburner or your OC software, then test for stability before investigating other causes.
Still Need Help?
Search our full database of 535+ documented PC errors for more solutions and step-by-step repair guides.
Search Error Database