Weird one for sure … You could try this …
Start Task manager ( ctrl- Alt Delete ) -> select startup > disable everything listed in the startup file. Reboot the system and give it a try.
If it does happen to load properly then it could be something like antivirus or a startup program conflicting ?
Then you can enable one at a time to see what it is ..
Im really stabbing in the dark here though.
The only person ever to get all his work done by "Friday" was Robinson Crusoe..