PC Restarting Randomly & Driving me insane!

Hey everyone, I’ve been having random full restarts while gaming and I’m trying to narrow down what’s causing it.

Specs:

Ryzen 5 5600X

RTX 3060 Ti

32GB Ram

Be Quiet! SFX 600W Gold PSU

No overclocking, all stock

Built by AWD-IT about 2 years ago

What happens: While playing RDR2, Battlefield,, my PC will suddenly freeze for a second and go to a black screen saying (PC ran into a problem) then restart itself. Windows shows:

Event ID 41 (Kernel-Power)

Event ID 161 (WHEA Hardware Error)

Event ID 6008 (Unexpected Shutdown)

Sometimes it crashes 5 minutes into a game, other times after hours. Temps are fine (GPU around 70°C, CPU around 65°C).

What I’ve tried:

Updated all drivers and BIOS

Stress-tested with OCCT Power Test for 16+ minutes (no crash)

GPU-only test also stable so far

Disabled Fast Startup, reset Windows power plan

Tried DLSS, DX11/DX12, and power limits (80–85%) in MSI Afterburner

Reliability Monitor sometimes shows LiveKernelEvent 141 after a crash

What I’m thinking: It seems like a transient power spike issue — the PSU might be dipping under load changes. Since it’s an SFX 600W, I’m wondering if it’s just on the edge for a 5600X + 3060 Ti combo.

Any advice be appreciated