SQL Server 2008 is not a valid login or you do not have permission

Facing issue when try to install Microsoft SQL Server 2008 R2 in Windows 7.

TITLE: Microsoft SQL Server 2008 R2 Setup ------------------------------ The following error has occurred: '' is not a valid login or you do not have permission. For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&

Solution:

Most of the people will face this error if the computer name and the user name is the same. Once change one of these, problem will be solved.