Lately i got a chance to help my customer with standard deployment of Project Server 2010, and as they say "you learn new things each day", i also learnt about an issue which could be seen as basic activity but could lead you to pull your hairs while troubleshooting.
The issue occurred while running SharePoint 2010 setup, after installing pre-requisites, and following first few initial screens of setup wizard. Once reached to the point where you can enter SharePoint database server name, and credentials which can be used to talk to database server. You may see this error:
Cannot connect to database master at SQL Server at <server_name>....