@echo off
>"%temp%\MyService.txt" type nul
>>"%temp%\MyService.txt" sc query mysql
for /f "tokens=1-4 delims= " %%a in ('findstr "STATE" %temp%\MyService.txt') do (
  if "%%d" neq "RUNNING" (
    sc start mysql>nul
  )
)
del /q "%temp%\MyService.txt"

------解决方案--------------------
试试我这个，呵呵

BatchFile code

@echo off
::判断服务是否被禁用，如果被禁用就设置为自动
wmic service where "name="mysql" and startmode="disabled"" call changestartmode
::判断服务是否启动，如果未启动就启动此服务
wmic service where "name="mysql" and state="stopped"" call startservice