Usually, we install SQL Server by default, it works just fine. However, in some special situation, that might be caused by security settings, one cannot open SQL Server database by Windows account. This article gives a fix to the problem.
Problem
You cannot auto start your SQL Server database, then try to start SQL server database from service,
Locate SQL Server, and Click Start on the left and top corner, however, you get an error message,
Fix
Right Click SQL Server in Service:
Click Properties to open,
Click Logon Tab,
Choose Local System Account,
Click OK to save. Then, Click Start again,
You fixed the problem.