1. Kindly check whether any services of K7 or SQL has been stopped.
2. Click on Start->Run->Type services.msc and enter
3. Services window opens up, if any of the K7 or SQL services or stopped, start those services and check.
4. If still, the issue persists please run the below URL in console machine via browser and check
5. Run the K7Bizdiag tool and try loggin to the console now.
Note: In case of same issue or required assistance, you may raise ticket at Submit a Ticket. So our Technical Support Team can assist you to resolve your query.