As-salaamu 3laikum, What is the ruling on playing the recitation of the Qur'an from a computer which is on a table on which food is also served or on a couch which people sit on? What about if the computer is on a bed which may have bodily fluids in it? What is the ruling on playing the Qur'anic recitation on youtube and small pictures with links to other videos appear next to it? Jazaakum Allahu khair

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.

Everything you have mentioned in the question is permissible; none of it constitutes improper treatment of the Quran or the like of what would require deeming it prohibited.