Script without put ran as administrator leaves no file [closed]

Try the following code snippet:

@ECHO OFF
SETLOCAL EnableExtensions
SC QUERY state= all | FINDSTR "Fax"
REM alternatively: SC QUERY Fax | FINDSTR "Fax"
IF ERRORLEVEL 2 (
    REM Findstr: Wrong syntax
) else (
    IF ERRORLEVEL 1 (
        REM "Fax": A match not found  
    ) else (
        REM "Fax": A match is found in at least one line of the query
        >> "%~dp0log.txt" SC CONFIG Fax START= DISABLED
    )
)

Explanation:

• note that SC QUERY without any option enumerates only running services (default state= active), see SC /?;
• check IF ERRORLEVEL number in descending order as ERRORLEVEL number specifies a true condition if the last program run returned an exit code equal to or greater than the number specified (i.e. IF ERRORLEVEL 0 is always valid), see IF /?;
• %~dp0 expands %0 to a drive letter and path (incl. trailing backslash), see call /?. Note that %~dp0 will return the Drive and Path to the batch script, see Links relative to the Batch Script)
• >> "%~dp0log.txt" SC … - see redirection.