I have a SharePoint Foundation site for our intranet. Port 80 is the default site and it is running fine. I also have other sites on the same server using ports 8001, 8002 etc for specific departments. None of those will run. I get "HTTP Error 503. The service is unavailable." when I go to the site. The application pools for some of these subsites show they are stopped. I can start the pool but it won't stay started.
I am using a custom account and the logon and password are valid, I can log onto a PC with them and nothing has changed on them recently. If I change the Identity under Process Model for one of the pools then the error for the site changes to 'Cannot find configuration database'.
I am seeing event IDs 50, 5021, 5057 and 5059 in System, and 6398, 3760 and 5586 in Application.