Re computer won't start if turned off

[Tipton, Timothy]

>Now the computer still doesn't begin when the button is pushed but it
>starts without problems if it is unplug... For now I will leave it like

>that because it starts without problems if I use the button in the back
of 
>the computer and later I will think about changing the motherboard. 



I've been watching this thread with interest, as I have the same exact
problem. It doesn't matter what Desktop manager I use - it will not
restart, or just boot after it's been turned off. This is on an all
brand new machine and I've not found an answer either - the only thing I
can do is use the toggle on the back of the power supply and cut all
power, leave it for about 20 seconds, then switch it back on and it will
boot (most of the time - sometimes I have to do this multiple times to
get it to boot).

-Tim