System powers off without affecting the computer.
System powers off without affecting the computer.
Hey, seems like you're dealing with a tricky setup. It looks like your CPU and GPU were swapped recently, but after getting the PC back online it only restarts the OS, not the hardware. Fans are still spinning, LEDs stay on, but pressing the mouse or keyboard doesn't trigger any action. Sometimes it shuts down completely, other times it just restarts normally. This isn't related to the operating system. You've reset a few times, changed power plans, and disabled Fast Secure Boot too. Anyone with insight on the GPU model (3080 Ti CPU 12900K, Z690 MBO, ASRock AIO cooling, NTX liquid cooler, 3x fans) can help?
It seems your PC is facing power delivery or BIOS-related problems after the repasting work. Some motherboards keep power on after shutdown because of BIOS configurations, which might explain why fans and LEDs remain active. The odd restart pattern—where the system sometimes powers off entirely before restarting—points to a power management or BIOS issue. After removing the CPU and GPU for repasting, verify that all power connectors are correctly connected: 24-pin ATX, 8-pin CPU, and GPU power pins. Also, confirm that fan or RGB cables weren’t swapped or disconnected. A BIOS setting such as ERP Mode or Deep Sleep could be responsible; try enabling ERP S4+S5 or deep sleep in the BIOS and save before restarting. Other factors like incorrect mounting or thermal paste leaks might also play a role, so re-seat the CPU cooler and inspect installation. Consider resetting or updating the BIOS, possibly removing the CMOS battery briefly before reinstalling it. If you can, test with a different power supply to eliminate supply-related issues.