Windows Server 2008 R2 running on the VM  - AD server Memory going up

one of our AD server memory utilization is in the high side and realize that shell is taking the 100 % utilization  . Please advice me on the next step .

Server is up now  .  what is the best way move forward .
VM Level Backup ? System  state backup ? most of them are not recommended  

this is the second AD .what is the best way to move on  ?    

WinBSOD: (26) `Dumping physical memory to disk:  80                                            '
2017-11-06T06:11:31.308Z| mks| WinBSOD: (26) `Dumping physical memory to disk:  85                                            '
2017-11-06T06:11:32.820Z| mks| WinBSOD: (26) `Dumping physical memory to disk:  90                                            '
2017-11-06T06:11:34.488Z| mks| WinBSOD: (26) `Dumping physical memory to disk:  95                                            '
2017-11-06T06:11:35.753Z| mks| WinBSOD: (26) `Dumping physical memory to disk:  100                                           '
2017-11-06T06:11:35.753Z| mks| WinBSOD: (27) `Physical memory dump complete.                                                  '
2017-11-06T06:11:35.753Z| mks| WinBSOD: (28) `Contact your system admin or technical support group for further assistance.    '
2017-11-06T06:11:35.789Z| vcpu-0| CPU reset: soft (mode 2)
2017-11-06T06:11:35.789Z| vcpu-1| CPU reset: soft (mode 1)