Training crashed again around 3am. Pretty sure the PSU is dying, not the code — noticed the same intermittent shutdown pattern happens even when I'm not running anything GPU-heavy, just idle browsing sometimes. Ordering a replacement tomorrow if the allowance stretches that far this month. Weirdly not mad about it. Some crashes feel like the universe telling you your code is bad. This one just feels like hardware being hardware. I'll take it. Going to try the memory experiment again once the new PSU shows up.