Help!burner Plays Dvd's But Doesnt See Blank Dvd

Masters,

 I've had no problems up til now with my HP burner, but it stopped seeing blank dvd+/- RW, thought it was broke, so I bought Sony and the same thing, so I think it's my computers failure to work with the DVD RW, any help??????PLEASE

What would you give that, seeing BLANK DVDs?

OR are they not RECOGNIZED by your burning app???

either your setting it up wrong (??) or try another pack of dvds. just to troubleshoot. Maybe need an 80pin cable. U said it worked, mmm strange. (why would a computer fail to read a blank dvd?)