Here is a problem I just encountered. Windows was getting past the initial boot screen and then looked like it would let you log in. But before you could or before you could even enter a password, it immediately began to shut down. Safe mode worked just fine. The problem ultimately was a bad Intel driver. Specifically, the Intel Dynamic Platform and Thermal Framework Generic driver. Once I disabled that, everything worked fine.

If your computer will not let you log in for any reason then most likely it is a driver causing the problem.

Here is what did not work. I first turned off fast boot because it causes more problems than it helps. Everyone should turn off fast boot, no exception. The user account had no password, so putting in a password in safe mode didn’t help either. It would shut down before you even log in. I couldn’t try Last Known Good Configuration because Microsoft in their idiotic selves decided to remove this most helpful feature. Seriously, the people who decided to get rid of that and F8 need to smack hard in the head every day for the rest of their life, and twice on Sunday. I am not joking. Neither did System Restore or system refresh work.

I only figured this out by doing a fresh install. When I installed the Intel drivers, immediately the system began to shut down. So in Safe Mode, I disabled all Intel drivers and then re-enabled them in a normal boot one-by-one until I found the problem driver. There may be more than one problem driver, so make sure you repeat until all possibles have been found.

REMEMBER that Stupid Windows 10, by default, updates drivers. It is my belief that drivers should not be touched except in these rare situations: something is not working well or you are a gamer. Even then, I only update my video card driver. What this means is that when Windows 10 updates your drivers — without your permission — then this problem will re-appear. Microsoft has become like the music and movie studios, that the product is theirs and you are given permission to use it. I am of the opinion that if I paid money for it, then it is mine and if I want to delay updates or not install a driver, then that is my right.