You said "word only DVD", what do you mean by that? As in text files? Audio files?
Is it a commercially pressed DVD or burned in a PC DVD burner? Some older players can't play DVDs burned on a PC for a variety of reasons (DVD format, age, recorded at too high a speed, poor quality blank DVD, etc.)
Do you have all the needed Codecs? Download and install K-Lite Codec Pack from https://www.codecguide.com/download_kl.htm I use "Standard'. The codecs will work for Windows Media Player, but I use K-Lite's Media Player Classic.
If the above doesn't work, there are lots of possible reasons. First, please tell us more about the DVD and it's content. What is your OS? Can you use Windows Explorer and successfully see the files on the DVD? Will the DVD run properly on another PC?