I have already published one post on How to fix slow opening of my computer and delayed contents display here.
There are still some issues like connected network drives when you use office at your work place.
Like in my office when I login at my system at my work place, according to the user policy every user is connected to the network drives at the server location.
These connection to the network drives make my computer more slow at the time of opening.
Let see how can you disconnect network drives.