Optimize MySQL Configuration - MySQL crash and after restart works

My WAMP MySQL has crashed 2 times the last week and I really wonder why! Once I restart the server everything works fine! Below I attach the error log of MySQL and the my.ini file! Can anyone suggest anything?? MySQL Error LOG: 2018-02-23 21:45:52 2000 [Note] Plugin 'FEDERATED' is disabled. 2018-02-23 21:45:52 2000 [Note] InnoDB: The InnoDB memory heap is disabled 2018-02-23 21:45:52 2000 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions 2018-02-23 21:45:52 2000 [Note] InnoDB: Compressed tables use zlib 1.2.3 2018-02-23 21:45:52 2000 [Note] InnoDB: Not using CPU crc32 instructions 2018-02-23 21:45:53 2000 [Note] InnoDB: Initializing buffer pool, size = 67.0G 2018-02-23 21:45:55 2000 [Note] InnoDB: Completed initialization of buffer pool 2018-02-23 21:45:55 2000 [Note] InnoDB: Highest supported file format is Barracuda. 2018-02-23 21:47:37 2000 [Note] InnoDB: 128 rollback segment(s) are active. 2018-02-23 21:47:37 2000 [Note] InnoDB: Waiting for purge to start 2018-02-23 21:47:38 2000 [Note] InnoDB: 5.6.12 started; log sequence number 321531472808 2018-02-23 21:48:16 2000 [Note] Server hostname (bind-address): '*'; port: 3306 2018-02-23 21:48:16 2000 [Note] IPv6 is available. 2018-02-23 21:48:16 2000 [Note] - '::' resolves to '::'; 2018-02-23 21:48:16 2000 [Note] Server socket created on IP: '::'. 2018-02-23 21:48:18 2000 [Note] Event Scheduler: Loaded 0 events 2018-02-23 21:48:18 2000 [Note] wampmysqld: ready for connections. Version: '5.6.12-log' socket: '' port: 3306 MySQL Community Server (GPL) My.ini Configuration File: [wampmysqld] port = 3306 socket = /tmp/mysql.sock key_buffer = 64M max_allowed_packet = 1000M sort_buffer_size = 512K net_buffer_length = 8K read_buffer_size = 256K read_rnd_buffer_size = 512K myisam_sort_buffer_size = 8M basedir=c:/wamp/bin/mysql/mysql5.6.12 log-error=c:/wamp/logs/mysql.log datadir=c:/wamp/bin/mysql/mysql5.6.12/data #innodb_thread_concurrency = 8 innodb_read_io_threads = 12 innodb_buffer_pool_size = 67G max_connections = 4000 max_user_connections = 0 # Disable Federated by default skip-federated [mysqldump] quick max_allowed_packet = 1000M [mysql] no-auto-rehash [isamchk] key_buffer = 20M sort_buffer_size = 20M read_buffer = 4M write_buffer = 4M [myisamchk] key_buffer = 20M sort_buffer_size = 20M read_buffer = 4M write_buffer = 4M [mysqlhotcopy] interactive-timeout [mysqld] port=3306 table_definition_cache = 800 My Server Details: > RAM: 128GB RAM CPU: Intel XEON 3,5GHZ HD: 2TB HDD Any recommendation??