Question SQL PROBLEM please help me for this

[Haseo]

i try to reinstall it but same problem....

it said that the server not found or was not accessible.
SQL network interface error 26 error Locating server

any suggestion about this problem??? i can't use my sql for my project.

 

[jmcilhinney]

Have you installed SQL Server Express? If so, which version?

 

[Lotok]

Go to program files --> Microsoft SQL Server --> SQL Server Configuration Manager

Under SQL Server network Config you will see what server instances are installed, first of be sure you have at least one there. If you dont, you need to install one.
Secondly, select a SQL instance by clicking 'Protocols for <instance name>' and check that TCP/IP is set to enabled.