nvlddmkm.sys / TDR Crash

What is nvlddmkm.sys?

The nvlddmkm.sys error is categorized as a high-severity graphics card (GPU) issue that can significantly impact your PC's stability. NVIDIA kernel driver crash. The screen goes black, the system tries to restart the driver. One of the most common NVIDIA BSOD codes. When experiencing the nvlddmkm.sys / TDR Crash fault, users often report sudden system crashes, unresponsive behavior, or a blue screen of death (BSOD). In most diagnostic scenarios, this problem is directly triggered by underlying hardware or software complications such as corrupt nvidia driver, memory overclocking, vram overheating and insufficient pcie power. To permanently resolve the nvlddmkm.sys issue and prevent further system degradation, it is highly recommended to follow our step-by-step troubleshooting guide below, ensuring your graphics card (GPU) components are functioning correctly.

Common Causes

• Corrupt NVIDIA Driver
• Memory overclocking
• VRAM overheating
• Insufficient PCIe power

Step-by-Step Fix Guide

• 1
  DDU clean install in Safe Mode

  Applying the first fix (DDU clean install in Safe Mode) addresses the most common root cause of nvlddmkm.sys and restores baseline functionality.

• 2
  Download fresh NVIDIA driver from nvidia.com

  If the problem persists, proceeding with the remaining steps ensures all edge cases related to gpu instability are covered.

• 3
  Underclock GPU memory via MSI Afterburner
• 4
  Increase TdrDelay in the register to 8

Commands & Diagnostics