you must download service pack 4 patch from below link :

http://www.microsoft.com/en-us/download/details.aspx?id=7218

install in your pc.

after installed restart your pc and then try.

hope this will work for you 🙂

hi hp7766,

first of all if u select default instance name at the time of sql server 2005 setup then the server name is ur computer name.

And if u use...