intel d815eea
piii 800eb
smart power 300watt
lian li pc68usb case <---- i reccomend it

os and others aren't important for this problem. sometimes the computer starts in a standby kind of mode out of nowhere. from a powered off state to where it seems just the fans spin. holding the power switch for 5 sec does nothing. i can only kill the juice to it to make it stop or start up normally after replugging it it. what's the dealio? it is connected to a lan but wol is disabled