omg yeah I have not opened the scene yet but if that desk is it and you are taking 14 hours with the system you have then there is definately a bunch of broken stuff in the scene file. That scene would take seconds to render on a plam pilot lol.

What you should do is select the stuff you need to render and delete all the stuff you do not need. You can also run file / optimize to delete unused stuff.

You just need to do a lot of cleaning. You can also run mesh cleanup and another option is to just select the geo you want to render and export it out then import it into a fresh scene. This is another way to flush all the garbage nodes that may have accumulated. Maya if infamous for creating these phantom nodes that cause all sorts of issues.