"have no effect" ,effect in this case is a noun .
"have not effect " ,is a different sentence and have not should follows by a verb such as "done" ,"finished" ...etc .In this case "affected" is commonly used .
"have no effect" ,effect in this case is a noun .
"have not effect " ,is a different sentence and have not should follows by a verb such as "done" ,"finished" ...etc .In this case "affected" is commonly used .