SSAS services stopped and no event written in log or event viewer


In one of the servers there is only SSAS services installed.
The services got stopped due to unknown reason. Later we have started these services manually.

The service stopped event is no where written in SQL log or in windows logs.

on the date the services got stopped there is only 1 log written " The system is out of memory. If using a 32-bit version of the product, consider upgrading to the 64-bit version or increasing the amount of memory available on the machine "

Could this be the reason for the service stop??

If this is the reason why the services haven't started again after the memory pressure is released...
SSAS services are in automatic state and there is no windows server reboot happened to release memory pressure.

Please suggest some tips how we can find the reason to service stop.

Thanks in advance.