Hi :-)
I guess at least ONCE you need to ask a technician to reboot.... it helped me a lot to setup a "scheduled task" which calls a .bat file with shutdown command in it every 24h.
Something like shutdown -s -f -t 60
Where are you hosting your rigs ?
VG
the problem is, that the rig cant do anything - i remotely add a task and tried to run this...but there is only the entry for the triggered event in event viewer and nothing happens
i will buy and install such a usb watchdog for this rig..than i can debug without calling technician each time

sometimes taskschedule is not working. Try to put event to regedit.
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Run"="C:\users\bob\desktop\run.bat"
like this google it

it is better. thats i know