With Windows, it is not a good idea to use the full node.  Use the Crypti Lite wallet instead.

There is an issue with the time sync within Windows that causes forks and the inability to sync the block chain.  In future releases, Boris is not going to release Windows versions of the full wallet because of this issue.  Windows versions will be Lite wallets only.  Full wallets will be Linux based.

You can try deleting the blockchain.db file and restarting the node.  This usually works.