Okay Kancy, let's see if I can help
Let's get some further info
1. what do you have it potted in? mix and pot?
2. frequency of watering
3. What light level are you keeping it at
4 how long has it been in your collection
5 when was the last time it was repotted
6 where do you grow, home, greenhouse?
6a if home, window or under lights?
7 humidity levels??
With this info I should be able to help you
If I am to guess...it has been kept too wet, either from over watering or a mix that is breaking down and you have lost the root system.
PS...nomenclature FYI...on species, the genus gets capitalized and the species name does not. Therefore, Dendrochilum javieri. You also have too many r's in the species name.