My PC repeatedly crashes while gaming whenever I use my RTX 3090, but swapping in my older RTX 2070 Super makes the system completely stable. I've already tried replacing the power supply, changing DisplayPort cables, clean-installing graphics drivers, reinstalling Windows and the affected games, and updating the motherboard BIOS. None of that fixed the 3090-related crashes. The 3090 was purchased refurbished in 2023, so I'm not sure whether any warranty coverage remains, and replacing it would be difficult financially. Is there anything else I can test or adjust to determine whether the card is repairable? My system has a Ryzen 7 5700X, ROG STRIX B450-F GAMING motherboard, 32 GB of RAM, an 850-watt PSU, and a 2 TB PCIe Gen4 SSD.
4 Answers
Try checking whether the 3090 has a firmware or VBIOS update available from the card manufacturer. A card-specific firmware issue can sometimes cause instability, although you should only use the exact update intended for your model.
An 850-watt supply is generally enough for a 3090 if it’s a good-quality unit and the power cables are connected correctly. Make sure the card uses separate PCIe power cables from the PSU rather than one daisy-chained cable. Also check the PSU model and age, since the 3090 can produce substantial transient power spikes.
Use Display Driver Uninstaller in Safe Mode to completely remove the existing NVIDIA driver, then install a fresh driver while the 3090 is installed. A normal uninstall can leave behind files or settings, so DDU is worth trying before assuming the card is dead.
Try reducing the card’s power limit in MSI Afterburner to around 90–92% and test again. If the crashes stop, the GPU may be unstable under full power, overheating, or beginning to fail. You can also slightly lower the core and memory clocks as a diagnostic step; stability after an underclock points more toward a hardware or thermal problem than Windows.
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