The only way that worked for me was to extract files from standalone installer (7zip) and run Setup.exe as administrator.

I tested every proposed solution. Here's the results:

1. EXEC('SET NOEXEC ON ' + @sqlstring)

2. EXEC('SET PARSEONLY ON ' + @sqlstring)

3. EXEC('SET FMTONLY ON ' + @sqlstring)

-> All 3 returned syntaxical...

The PARSEONLY option checks the SQL syntaxt but not the objets existance.

SELECT * FROM NonExistingTable -> parsing says OK !

How can I verify the querie's objects existance?

It is that! Just one thing: you cannot use SET PARSEONLY ON and SET PARSEONLY OFF in the same statement because the query would be executed and not parsed! So...

Here you have a topic on locking issues after SP4 installation: http://www.sqlnewsgroups.net/group/microsoft.public.sqlserver.server/topic1883.aspx