text: why doesnt my computer play dvds when it used to? my computer was recently wiped clean cos it was running badley and before it was done my dvd used to work now it doesnt and dont no waht to do to fix problem when you "wiped clean" your p,c,. you also removed the program which contained the necessary codecs to play a dvd - try downloading this - it is free (a one-stop codec pack) http://sourceforge.net/projects/gordianknot