When i use this option, the software don't restart and the CPU is on 99% of utilization.
I'm on windows Xp Pro SP2. What can i do?

There is something running, a job or some other process that the scheduler cannot abort and it hangs waiting for that process to exit.

You can use an alternative method involving forced scheduler process termination and restart. For details please see here
http://www.softtreetech.com/24x7/archive/41.htm

: When i use this option, the software don't restart and the CPU is on 99% of
: utilization.
: I'm on windows Xp Pro SP2. What can i do?