problem

I am having a problem. A few days ago I was burning cds and everything was working fine. Then the next day I can not do anything like that. When I do go to try to do this it says that I have no recognized recorders. I downloaded 2 different programs thinking it was a problem with the one I was using but they are saying exactly the same thing. I went to device manager and my cd burner and my dvd rom drive are not even listed in the devices. So I went into bios and reset the defaults and they still did not show up. I dont understand why it is not recognizing my cd burner or dvd rom drive. What suggestions do you have that I could try?