"random" reboots when connected on a specific wifi

Jul 9, 2013
title pretty much says everything, when i am connected to a specific wifi (university wifi) i get 1-2 reboots each day, phone never rebooted when i was not connected (or trying to connect) there. Also most reboots happen when trying to wake phone , just when i press power button i see the miui logo...

this has been happening for a month, i tried flashing from miflash, 1-2 formats but still facing the issue,
is there anything else i can do?