Cant log into windows after i logged out

[fixing1]

If i turn the pc on,it logs in without a problem
but if windows logs out due to inacativity i can't log back in,after i click the log in button,it seems to be loading,but it just returns to the login screen

This only started recently ,but i don't know what the cause might be

 

[fixing1]

this resolved itself after a few days