Problem with computer sign-in

Hi,

I have problem with my microsoft account in my computer. 

I had not use my computer for 4 days and when I open it shows me the message that The Group Policy Client service failed the sign-in.

I tryed to sign in as I have usually done but it tells me that access is denied. 

I have read some informations in this site about the problems with sign-in but it looks that those aren’t the same with my situation because I can’t have access in my computer.

I hope in your response.

Thank you!