SQL server 2012 or 2014.
1. Please check service pack first.
SQL server 2012
https://support.microsoft.com/en-us/kb/2837964
SQL server 2014
https://support.microsoft.com/en-us/kb/2993859
2. If you have still problem, please check that memory pressure. You may can find warning on event log.
<Unexpected termination>
Unexpected_Termination
<EventLog>
Unexpected_termination_EventLog
