SPinning on welcome screen

[hair50lascassas]

My computer is spinning on the welcome screen after I put in my pin. How do I get past this or to safe mode

[Karmeck]

I'm here as well. 

Press F4 during startup.

Not solved yet 

[Karmeck]

Solved. Disconnected the computer from the internet and turned off secure boot in bios, this forced the computer to log in to a local account.

If bitlocker was ever used, you will need the recovery key here. It is stored in your Microsoft account. Here 

https://account.microsoft.com/devices/recoverykey?hl=sv-SE&refd=account.microsoft.com 

I then ran cmd (command prompt) with 

sfc /scannow

And have now survived a restart.