My gaming PC crashes almost every time I launch a game. In Arc Raiders, it shuts down after about 30 seconds even on low settings, while Overwatch usually crashes partway through a match. The failure varies: sometimes Windows shows a blue screen, and other times the entire computer instantly loses power and turns off. The system has a GeForce RTX 5070 Ti TUF Gaming GPU, Ryzen 7 7700X CPU, 32GB of DDR5 memory, a Corsair TX850M power supply, an ASUS TUF GAMING B650-PLUS WIFI motherboard, and a Lian Li Hydroshift II LCD-S 360TL AIO. What should I test first to identify the faulty component?
2 Answers
An instant power-off under gaming load points toward a power-delivery or protection issue, so the PSU is worth investigating. It could also be overheating, a loose GPU power connector, or a hardware fault. Reseat the GPU and all PSU cables, especially the GPU connector, and check CPU/GPU temperatures while testing. If possible, try a known-good PSU with enough capacity before replacing parts.
Start with basic isolation: remove any CPU, GPU, RAM, or memory overclocking, temporarily disable EXPO, update the motherboard BIOS and chipset drivers, and perform a clean graphics-driver installation. Then test memory with a bootable memory diagnostic and run separate CPU and GPU stress tests. If only combined gaming loads cause an immediate shutdown, that makes the PSU, cabling, motherboard power delivery, or thermals more suspicious.
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