Login stuck at "Preparing Windows"

My computer blue screen crashed several times in a row, and wouldn't get to the OS because of it. I then preformed a quick restore, and can get to the login screen now, but after my password is entered the screen says preparing windows for about 15 minutes, after which I get sent to a black screen with a mouse. Once I was given the notification that "ChangeIcon MFC Application has stopped working," though that only happened one of the times. What can I do?

Some how via safe mode you have to uninstall this update listed below
that is if you cant get to control panel on main window

1. Access Control Panel (I use Small Icons view)
2. Click on Windows Update
3. Click on Installed Windows Updates
4. Look for Update for Windows 8.1 for x64-based Systems (KB2984006) and double click to uninstall it.
5. Reboot when prompted and issue is fixed.

Unfortunately even in safe mode I get black screened; however that's only true of the desktop. I can open command prompt or task manager, they're just superimposed on the black screen.

task manager you can get to control pane find that update uninstall it and your computer should start working as it should do

The last time I got stuck at boot up it was caused by a bios setting "Protect Boot Area" or something like that.. As soon as I disabled it, everything went smoothly.