Shuttle XPC 250W Power Supply (CSSHMIS10) Power Supply "shuts down unexpectedly" Questions

...unexpectedly shut off without powering down? It is still plugged in. The battery is fully charged. Maybe a heat issue. I had a P4 system once that would do that exact same thing. I cleaned the cpu ...

...down unexpectedly and when I went to power back on the power switch does not work. I see no visible damage. I press the power switch or the reset switch and get nothing. Not sure if this is a power ...