Look at the following procedure:
1. Download SQL Server 2012.
2. Open the disc image and run setup.exe.
![setup]()
3. The SQL Server Installation Center opens, click “Install” on the left side, then select “New SQL Server stand-alone installation or add features to an existing installation”.
![Installation]()
4. Confirm the Support Rules, then click “OK”.
![Support Rules]()
5. Enter your product key or select “Evaluation Edition”, then click “Next”.
![Evaluation Edition]()
6. Accept the License Terms, then click “Next”.
![License Terms]()
7. Check “Include SQL Server product updates”, then click “Next”.
![Include SQL Server product updates]()
8. A warning will appear about installing SQL Server on a Domain Controller. Ignore it and click “Next.”
![Domain Controller]()
9. Select “SQL Server Feature Installation”, then click “Next”.
![SQL Server Feature Installation]()
10. Check “Database Engine Services”, “Management Tools – Complete” and anything else you need, then click “Next”.
![Database Engine Services]()
11. Ensure the Installation Rules have passed, then click “Next”.
![Installation Rules]()
12. Keep the default instance name and root directory, then click “Next”. If you need a named instance, then select the name of the instance radio button and provide a name for it.
![instance radio button]()
13. Review the Disk Space Requirements, then click “Next”.
![Disk Space Requirements]()
14. Use the Service account for all services, then click “Next”.
Note: This not a best practice since each service should run using a separate service account.
![Service account for all services]()
15. Select “Windows authentication mode”, add the service account to the SQL Server administrators, then click “Next”.
![Windows authentication mode]()
16. Add the service account to the Analysis Services administrators, then click “Next”.
![Analysis Services administrators]()
17. Select “Install and Configure” for Reporting Services Native Mode, then click “Next”.
![Install and Configure]()
18. Leave everything else as the default, then continue clicking “Next” until the installation begins.
![until installation begins]()
19. Reboot the machine.