Ive dealt with motherboards that have been shorted out on one of their
mounts before which causes similar behaviour. Try removing everything from
case and running out of the box to see if that solves problem.


"Cyde Weys" wrote in message
...
Jonas Dieckelmann wrote:

Has anybody a hint, why the system still wont power down ?

I know this maybe isn't the answer you're looking to, but you can ALWAYS
shut down your PC by flipping the power switch on the PSU to off.