A blue screen error appears referencing the file “nvlddmkm.sys”. This file is part of the NVIDIA graphics driver. The error may happen during boot, gaming, or heavy graphics usage.
Common Causes:
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Corrupted NVIDIA driver files
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Incomplete driver installation or update
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Conflict between old and new driver versions
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GPU overclocking or power management issues
Solution:
Step 1: Replace nvlddmkm.sys Manually
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Go to the folder: C:\Windows\System32\drivers
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Find the file named nvlddmkm.sys
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Rename it to: nvlddmkm.sys.old
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Open the folder where the NVIDIA driver setup was extracted (usually C:\NVIDIA or C:\Program Files\NVIDIA Corporation).
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Search for a file named: nvlddmkm.sy_
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Copy that file to a temporary folder, for example: C:\Temp
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Click Start, type cmd, right-click it, and choose “Run as administrator”
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In the command prompt, type:
expand C:\Temp\nvlddmkm.sy_ C:\Temp\nvlddmkm.sys
Press Enter -
After expansion, copy the new file nvlddmkm.sys to:
C:\Windows\System32\drivers -
Restart your computer
Step 2: Perform a Clean Install of NVIDIA Driver
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Download the latest driver for your graphics card from the NVIDIA website
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Run the installer
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Select Custom (Advanced)
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Check the box for “Perform a clean installation”
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Finish the setup and restart
Optional Step: Check Power Settings
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Go to Control Panel > Power Options
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Choose High performance
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Click “Change plan settings” > “Change advanced power settings”
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Set PCI Express > Link State Power Management to Off
Optional Step: Test for Hardware Stability
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Use tools like FurMark or OCCT to stress test the GPU
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Make sure your system is not overheating
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If possible, reseat the graphics card or check for dust if using a desktop
Summary:
The nvlddmkm.sys blue screen error is often caused by a corrupted or mismatched NVIDIA driver. Manually replacing the driver file and performing a clean install usually resolves the issue.