Server Errors – driver could not be found

We are currently faced by this situation in our work station where we get almost a thousand error messages only on one server. The computers on which these printers are connected are not even running yet we get the error messages in the Event Viewer stating that a certain driver required for a particular driver could not be found. The administrator has to be contacted before re-attempting to login. These errors are affecting everyone at work and I have been unable to figure it out so please help.
