you would need to post more info:
is it an AWP or a club machine?
Scorpion 4 or Scorpion 5?
Is it a DES machine?
Which PSU are you using, sankin or stadium?
Bellfruit machines are famous for resetting..
After initialisation the machine will attempt to turn on all bulbs.
This causes the machine to draw more current on the 48v line than the psu likes, so it resets and trys again...