None of the selected features can be installed or upgraded. Setup cannot proceed since no effective change is being made to the machine. To continue,

While installing Microsoft SQl 2005 you may face this message...

TITLE: Microsoft SQL Server Setup------------------------------
None of the selected features can be installed or upgraded. Setup cannot proceed since no effective change is being made to the machine. To continue, click Back and then select features to install. To exit SQL Server Setup, click Cancel.
For help, click: http://go.microsoft.com/fwlink?LinkID=20476&ProdName=Microsoft+SQL+Server&ProdVer=9.00.1399.06&EvtSrc=setup.rll&EvtID=SQLSetup90&EvtType=28108
------------------------------BUTTONS: OK------------------------------
To solve this problem:
To get around this issue, run the setup.exe from the SQL installation source from your Run command with the parameter SKUUPGRADE=1 or UPGRADE=1.
For more ref
Hope this helps you people! CodeProject