Install SQL Server 2014

# Install SQL Server 2014
# Source: https://msdn.microsoft.com/en-us/library/hh231669.aspx
Setup.exe /qs /ACTION=Install /FEATURES=SQLEngine,Replication /INSTANCENAME=MSSQLSERVER /SQLSVCACCOUNT="<DomainName\UserName>" /SQLSVCPASSWORD="<StrongPassword>" /SQLSYSADMINACCOUNTS="<DomainName\UserName>" /AGTSVCACCOUNT="NT AUTHORITY\Network Service" /TCPENABLED=1 /IACCEPTSQLSERVERLICENSETERMS

# Enable remote connections on the instance of SQL Server
EXEC sys.sp_configure N'remote access', N'1'
GO
RECONFIGURE WITH OVERRIDE
GO

# Enable and start the SQL Server Browser service
sc config SQLBROWSER start= auto
# After it is enabled, run the following command from the command prompt to start the service:
net start SQLBROWSER

# Create exceptions in Windows Firewall
netsh firewall set portopening protocol = TCP port = 1433 name = SQLPort mode = ENABLE scope = SUBNET profile = CURRENT

# Enable TCP/IP on the instance of SQL Server
$smo = 'Microsoft.SqlServer.Management.Smo.'
$wmi = new-object ($smo + 'Wmi.ManagedComputer')

# Enable the TCP protocol on the default instance.  If the instance is named, replace MSSQLSERVER with the instance name in the following line.
$uri = "ManagedComputer[@Name='" + (get-item env:\computername).Value + "']/ServerInstance[@Name='MSSQLSERVER']/ServerProtocol[@Name='Tcp']"
$Tcp = $wmi.GetSmoObject($uri)
$Tcp.IsEnabled = $true
$Tcp.Alter()
$Tcp