Troubleshooting NVIDIA GPU Error 43 Following CPU Upgrade: A Comprehensive Guide
Introduction
Upgrading your PC’s hardware can significantly boost performance, but it can also introduce unforeseen issues. Many users have encountered the “Error 43” message with NVIDIA graphics cards after performing hardware upgrades, particularly when changing the CPU. This article provides a detailed overview of a real-world scenario involving such an issue, along with proven troubleshooting steps and best practices to resolve it effectively.
Case Overview
A desktop system equipped with an NVIDIA RTX 3070 GPU initially housed an Intel Core i5-12400 processor. The user aimed to upgrade to an Intel Core i5-14600K to enhance overall performance. The upgrade process involved updating the motherboard BIOS and physically installing the new CPU. Post-upgrade, the system encountered booting issues related to the GPU, prompting a series of troubleshooting attempts.
Initial Challenges Post-Upgrade
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Booting Difficulties
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The user observed boot issues when the HDMI cable was connected to the GPU after installing the new CPU.
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Reverting to the original i5-12400 CPU and switching the display connection to the motherboard’s HDMI port enabled Windows to boot.
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Despite successful boot, Windows did not recognize the GPU initially, though the GPU’s LED indicators indicated power.
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Reseating the GPU resolved this recognition issue temporarily.
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Re-attempting the CPU Upgrade
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After reinserting the i5-14600K, the system was stable for about a day.
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Subsequently, upon restart, the GPU stopped functioning, and Windows displayed the common error: “Windows has stopped this device because it has reported problems. (Code 43)”.
Key Observations and Factors
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The user had limited CPU power consumption by setting PL1 and PL2 to 125W, aligning with a 600W power supply.
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System stability was maintained during gaming sessions before the error appeared.
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The motherboard model in use was Asus B660-Plus D4.
Troubleshooting Efforts Undertaken
The user attempted several standard solutions:
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Reinstalling GPU drivers
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Reseating and switching PCIe slots for the GPU
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Restoring the system to a previous restore point
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Resetting BIOS settings to default
Despite these efforts, the Error 43 persisted.
Potential Causes and Considerations
Error 43 typically indicates hardware communication issues, driver conflicts, or power supply problems. In the context of CPU upgrades, additional factors
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