Update:
Normally I return to my PC in the morning and it has rebooted, however after disabling the Microsoft Account Sign-in Assistant and found my PC had not rebooted overnight. I'm not claiming this to be the answer but may be worth testing.
Warning: I do not use a Microsoft account to login to my PC. If you do, this potentially could negatively impact you. Proceed with caution.
Status: Device is still running. I will edit this post if it crashes once more.
How to [screenshots below]:
- Press Windows Key + R on your keyboard to open the Run option.
- Type services.msc and press enter. This will open a new window with the header Services. Don't randomly stop and start services unless you enjoy potentially crashing your device.
- Find the service entitled Microsoft Account Sign-in Assistant. Double click the aforementioned service to open a new window for the Microsoft Account login service. does it work?