psu-failure Troubleshooting

Power supply failure on the NVIDIA GeForce RTX 4090

Source: NVIDIA support — GPU troubleshooting Confidence: 80% Verified Aug 9, 2026

The power supply fails, causing the PC to shut down or not boot.

How to fix Power supply failure

Check the PSU

Test the PSU with a known-good unit or a PSU tester.

Source: NVIDIA support — GPU troubleshooting Confidence: 80% Verified Aug 9, 2026

Difficulty: ★★ Est. 15 min

Replace the PSU

If the PSU is faulty, replace it with a compatible one.

Source: NVIDIA support — GPU troubleshooting Confidence: 80% Verified Aug 9, 2026

Difficulty: ★★ Est. 20 min

Replacement parts for the NVIDIA GeForce RTX 4090

NVIDIA GeForce RTX 4090 Thermal Paste NVIDIA GeForce RTX 4090 Mounting Kit NVIDIA GeForce RTX 4090 Cooling Fan NVIDIA GeForce RTX 4090 Cable

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