For the past few months, my PC has occasionally powered off and immediately restarted while I'm playing games. It has happened about three times this year, including once in August and again recently while playing Dawnwalker. The GPU temperature was around 45–50°C and the CPU was roughly 50–60°C, so neither appeared unusually hot. There's no blue screen or error message—the system simply reboots. What should I check to determine whether this is a power supply problem, hardware instability, or something software-related?
3 Answers
Those temperatures are normal, so overheating probably isn’t the cause. A sudden shutdown followed by an immediate reboot often points to the power supply, a power-delivery problem, or general hardware instability. Check Event Viewer around the time of the crash for a Kernel-Power Event ID 41, then see whether the reboots happen specifically under heavy CPU and GPU load.
Some games can expose an instability that stress tests and other demanding games don’t trigger. A particular engine, driver interaction, or workload pattern may be involved, especially if the crashes happen mostly in newer titles. Updating the BIOS and graphics drivers, disabling overclocks or XMP/EXPO temporarily, and checking Windows reliability history may help narrow it down. Kernel-Power 41 by itself only says the computer rebooted without shutting down properly; it isn’t a diagnosis.
What CPU, GPU, and power supply are you using? If Event Viewer only shows Kernel-Power 41 or similar unexpected-shutdown entries, the PSU becomes one of the main suspects. Check that the PSU has enough capacity, that all power cables are firmly connected, and that the issue isn’t caused by an unstable overclock, undervolt, or memory profile.
That’s a good place to start. If the only entry is Kernel-Power 41, it confirms the shutdown wasn’t clean, but it doesn’t identify the failed component. The PSU is still worth investigating if the crashes continue.