Windex works great and is certainly safe for cleaning your computers LED computer monitor screen and Windex is also safe for cleaning LED Televisions as well.
You can also use Vinegar and Water for cleaning your LED Computer Monitor or LED Television by mixing equal parts of water and equal parts of Vinegar into a spray bottle and then use a Microfiber Cloth and spray the Vinegar and Water or Windex onto the Microfiber Cloth and then Gently Wipe the LED screen with the microfiber cloth.
Be careful not to press too hard onto the screen when wiping clean the LED monitor or Television since pressing too hard on the screen can damage the LED monitor or LED Television.