There was a failure to validate setting INSTANCENAME in validaton function ValidateUsers

Hello,

I'm trying to install SQL Server 2012 and I'm having trouble entering in the INSTANCENAME.

I have read on some forums that the default value for this is MSSQLSERVER.  Regardless of what values I put in, I get the following error message.

TITLE: SQL Server Setup failure.
------------------------------

SQL Server Setup has encountered the following error:

There was a failure to validate setting INSTANCENAME in validaton function ValidateInstanceName.

Error code 0x85640004.

For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft%20SQL%20Server&EvtSrc=setup.rll&EvtID=50000&EvtType=0x2990711A%25400x38AD03A5

------------------------------
BUTTONS:

OK
------------------------------

 

Any help would greatly be appreciated!