If you can get into safe mode, try creating a new admin account.
It might just be some programs/services try to start. Check the event log.
It is taking a ludicrous amount of time to load, + this is a pretty powerful rig. I am going to try to make a new admin account though, but keep in mind that the current one has all my programs on it and also I tried logging into another account and that didn't work. I was forced to force shut down about five times (hoping the HDD is okay) and even had to turn off the power supply when holding the power button down didn't work. I'm seriously afraid that my OS is bricked.