Hey Debau,
I don't think the server time difference will cause the BB Policy and Dispatcher not to started. These services are very dependent on the MSSQLSERVER service. If the MSSQLSERVER service is not started first, then these BB services will not start properly. I would suggest to look into the Policy and Dispatcher logs to see any specific error codes... they usually starts with 5xxx.
See
KB-04099 for tables of these error codes.