After deleting manually ldf files related to the share point databases, it's impossible to connect to SharePoint sites. It shows: "Cannot connect to the configuration database"
It is not related to restarting SQL and Sharepoint services, the services run normally, but looking at the databases in SQL Server managent Studio , their schemas have been destroyed - there is no structure in them, they show as mere folders. They're basically either empty or corrupted. There is no cross symbol next to it to open it, and when i right click -> Reports, it prompts an error ''this property may not exist for this object, or may not be retrievable due to insufficient access rights".
From the logs:
Login failed for user 'DS\SharepointService'. Reason: Failed to open the explicitly specified database SQL Database 'SharePoint_Config' on SQL Server instance 'spn' not found. Additional error information from SQL Server is included below. Cannot open database "SharePoint_Config" requested by the login. The login failed.
I have no idea where to search next, as this installation was not done by me in the first place.