On my dev machine I only start the SQL Server services just before I start developing, no point wasting resources ;) - this script just makes it easier to start them all up

StartSQLServices

###
# Start MS-SQL Services
#
# By default I've stopped the MS-SQL servers for performance reasons, if you're
# not going to use it, don't run it. If you do. Run the script first :)
#

###
# Needs to run as administrator
# code from: http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/23/a-self-elevating-powershell-script.aspx
#
# Get the ID and security principal of the current user account
 $myWindowsID=[System.Security.Principal.WindowsIdentity]::GetCurrent()
 $myWindowsPrincipal=new-object System.Security.Principal.WindowsPrincipal($myWindowsID)
  
 # Get the security principal for the Administrator role
 $adminRole=[System.Security.Principal.WindowsBuiltInRole]::Administrator
  
 # Check to see if we are currently running "as Administrator"
 if ($myWindowsPrincipal.IsInRole($adminRole))
    {
    # We are running "as Administrator" - so change the title and background color to indicate this
    $Host.UI.RawUI.WindowTitle = $myInvocation.MyCommand.Definition + "(Elevated)"
    $Host.UI.RawUI.BackgroundColor = "DarkBlue"
    clear-host
    }
 else
    {
    # We are not running "as Administrator" - so relaunch as administrator
    
    # Create a new process object that starts PowerShell
    $newProcess = new-object System.Diagnostics.ProcessStartInfo "PowerShell";
    
    # Specify the current script path and name as a parameter
    $newProcess.Arguments = $myInvocation.MyCommand.Definition;
    
    # Indicate that the process should be elevated
    $newProcess.Verb = "runas";
    
    # Start the new process
    [System.Diagnostics.Process]::Start($newProcess);
    
    # Exit from the current, unelevated, process
    exit
    }


# Database engine
Start-Service MSSQLSERVER
Start-Service SQLWriter
Start-Service SQLSERVERAGENT
Start-Service MSSQLFDLauncher

# Analysis engine
Start-Service MSSQLServerOLAPService

# Integration engine
Start-Service MsDtsServer110

# Reporting engine
Start-Service ReportServer