A network-related or instance-specific error occurred while establishing a connection to SQL Server!

in the computer room charging system, their own database has repeatedly encountered a " in with SQL network-related or instance-specific errors when establishing a connection ! "This error prompt is as follows:

Find a lot of information has not been resolved, and ultimately in the help of students to solve, here to the students to provide the help of the deep gratitude (not to mention the name Ah!). Below I will take the solution of this problem one by one, hope to help you, but also hope that they can remember this solution.

First, open "manage" on your local computer,

Next, select services and Applications from the Admin menu and select Services

Then find theSQL Agent in the service

Right-click SQL agent, select Start, wait about - seconds to complete and your database problem will be solved after completion.

Their own database is also the problem of the old, I just know so to solve, but why the old have such a problem, they are not very clear, but also hope to get everyone's help, you can contact me Oh! greatly appreciated.

A network-related or instance-specific error occurred while establishing a connection to SQL Server!