Hi Monil,
Okay... I think we've got the answer for you.
It appears that, for some reason, the installer didn't write the dentries into the jos_components table of your database.
To correct that, I'm attaching a zip file that contains an SQL file for you to upload via phpMyAdmin to your database that will add the component links for you.
IMPORTANT: the SQL assumes that you are using the default prefix of jos_ in your database. If you are using something other than that, then you will need to open the SQL file and replace jos_ with whatever prefix you are using.
Hope this helps!
Terry