Resetting sa password in SQL Server Express

Open the Services application and look for SQL Server (SQLEXPRESS).
Stop the SQL Server (SQLExpress) service.
Right-click the SQL Server (SQLExpress) service and select Properties.
At the Start parameters field type in -m.
Click the Start button.
Close the Services application.
Open a Command Prompt in elevated mode.
Execute the following command:
```
osql -S <LOCAL_PC_NAME>\SQLEXPRESS -E
```
Note: The <LOCAL_PC_NAME> must be changed appropriately.
At the prompt generated by the previous command invoke the following commands in sequence:
```
sp_password NULL,'<NEW_PASSWORD>','sa'
```
Note: Change <NEW_PASSWORD> to your desired password.
```
go
```
```
quit
```
Close the elevated Command Prompt.
Repeat steps 1 to 6, but on step 4 remove -m from the Start parameters field, if it exists.