Bug Check 0x3B: SYSTEM_SERVICE_EXCEPTION
This indicates that an exception happened while executing a routine that transitions from non-privileged code to privileged code.
In addition: BCP1 = 0xC0000005: STATUS_ACCESS_VIOLATION, meaning the cause of the crash was memory corruption.
As its very unlikely a windows service has a memory corruption issue, either a driver is corrupting memory, or you have a RAM error. Of the two, a RAM error is more likely.
Run memtest86 for a few hours and report back.